Copiar y Editar

C3 Revision

Descripción

GCSE Chemistry Mapa Mental sobre C3 Revision, creado por Lauren Stokes el 09/04/2017.
Lauren Stokes
Mapa Mental por Lauren Stokes, actualizado hace más de 1 año
Lauren Stokes
Creado por Lauren Stokes hace más de 7 años
11
1
0

Resumen del Recurso

C3 Revision
  1. Periodic Table
    1. Newlands
      1. Built on Dalton law of Octaves
        1. Every 8th element had similar properties
        2. Arranged elements by atomic mass
          1. Assumed all elements had been found
          2. Mendeleev
            1. Arranged elements by atomic mass
              1. Grouped elements with similar properties together
                1. Left gaps in the table for elements yet to be discovered
                  1. Predicted properties for those elements yet to be discovered
                  2. Modern Periodic Table
                    1. Metals/Non-Metals
                      1. Elements arranged by proton number
                        1. Arranged in groups
                          1. Number of electrons in the outer shell
                          2. Arranged in periods
                            1. Number of shells
                          3. Group 1- Alkali Metals
                            1. 1+ ion
                              1. Li, Na, K
                                1. Less dense than water
                                2. React with water
                                  1. Make H2
                                  2. Universal indicator
                                    1. Purple
                                    2. Down the group
                                      1. Lower melting/boiling point
                                      2. Stored in oil
                                        1. React with oxygen in air
                                        2. Reactiviity
                                          1. Increases down the group
                                            1. Due to larger atom
                                              1. Therefore outer electron is further away from +ve nucleus
                                                1. So it is easier to lose electrons due to shielding effect
                                                  1. Less electrostatic force
                                          2. Reactions
                                            1. React with Cl
                                              1. Make metal chlorides
                                                1. Soluble, white solids = ionic (colourless solutions)
                                                2. More vigorous as you go down the group
                                            2. Transition Metals (Compared to Group 1)
                                              1. Higher melting point
                                                1. Higher density
                                                  1. Stronger/Harder
                                                    1. Much less reactive
                                                      1. Good conductors
                                                        1. Used for catalysts
                                                          1. Ni > margarine
                                                          2. Form coloured compounds
                                                            1. CuSO4 > Blue
                                                            2. Ions with different charges
                                                              1. Slow to corrode
                                                              2. Group 7- Halogens
                                                                1. Non-Metals
                                                                  1. 1- ions
                                                                  2. Coloured vapours
                                                                    1. Diatomic molecules
                                                                      1. 2 atoms joined together
                                                                      2. Low melting/boiling points
                                                                        1. Gases & liquids
                                                                          1. Weak forces of attraction
                                                                          2. Covalently bonded
                                                                            1. Poor conductors
                                                                              1. Down the group
                                                                                1. Melting/Boiling point increases
                                                                                2. Reactivity
                                                                                  1. Decreases down the group
                                                                                    1. Due to larger atom
                                                                                      1. Therefore outer shell is further away from nucleus
                                                                                        1. So it is harder to gain electrons due to shielding effect
                                                                                          1. Less electrostatic force to attract
                                                                                  2. Halogen Displacement
                                                                                    1. A more reactive halogen will displace a less reactive one from a compound
                                                                                3. Water
                                                                                  1. Hard Water
                                                                                    1. Less lather
                                                                                      1. Contains Mg2+ & Ca2+ ions, dissolved when water passes through rocks
                                                                                        1. Scum
                                                                                          1. Produced when hard water reacts with soap
                                                                                            1. Castearate
                                                                                          2. Scale
                                                                                            1. Produced when hard water is heated
                                                                                              1. Basically limestone
                                                                                                1. Calcium Carbonate (CaCO3)
                                                                                                2. Positives
                                                                                                  1. Ca good for bones/teeth
                                                                                                  2. Negatives
                                                                                                    1. Kettles fur up
                                                                                                      1. Less efficient
                                                                                                3. Formation of hard water
                                                                                                  1. Water flows over Gypsum (contains Ca2+ & Mg2+) , or over limestone (contains Ca2+)
                                                                                                    1. CO2 dissolved in rainwater (little acidic)
                                                                                                      1. Reacts with carbonate forming CaHCO3 (aq)
                                                                                                  2. Temporary Hard Water
                                                                                                    1. Removed by boiling water
                                                                                                      1. Contains dissolved CaHCO3
                                                                                                        1. When heated HCO3 splits into CO3 2+ , H2O & CO2
                                                                                                          1. CO3 2+ reacts with Ca2+ making scale
                                                                                                            1. Disadvantages
                                                                                                              1. Wastes energy
                                                                                                                1. Very expensive
                                                                                                              2. Permanent Hard Water
                                                                                                                1. CaSO4/MgSO4
                                                                                                                  1. Not removed by heat
                                                                                                                    1. But can still be softened
                                                                                                                  2. Why Soften?
                                                                                                                    1. Don't waste soap
                                                                                                                      1. Stop scum & scale formation
                                                                                                                        1. But hard water is better for your health
                                                                                                                        2. Removing Hard Water
                                                                                                                          1. Add sodium carbonte
                                                                                                                            1. Precipitates out the Ca & Mg ions to form insoluble carbonates
                                                                                                                            2. Fill with resin
                                                                                                                              1. Contains sodium/hydrogen ions
                                                                                                                                1. As the water is passed through the resin, the Na/H ions are exchanged with Ca/Mg ions
                                                                                                                                  1. Needs to be topped up with Na ions so NaCl is poured in to replenish
                                                                                                                                2. Water Treatment
                                                                                                                                  1. Makes Water safe to drink by removing solids and micro-organisms
                                                                                                                                    1. Water source > filter solids
                                                                                                                                      1. Sedimentation of small particles using aluminium sulphate
                                                                                                                                        1. Filter of Fine sand
                                                                                                                                          1. Chlorine > to disinfect
                                                                                                                                      2. Distillation > Pure water
                                                                                                                                        1. Heat to 100C
                                                                                                                                          1. Water vapour
                                                                                                                                            1. Condenses
                                                                                                                                              1. Turns back to H2O
                                                                                                                                        2. Silver > discourages bacterial growth on filter
                                                                                                                                          1. Carbon > reduces Cl levels in ion exchange resin
                                                                                                                                          2. Water Issues
                                                                                                                                            1. Chlorine
                                                                                                                                              1. Advantages
                                                                                                                                                1. Kills microbes in water
                                                                                                                                                2. Disadvantages
                                                                                                                                                  1. Cl compounds can form toxic compunds
                                                                                                                                                    1. Remove using filters
                                                                                                                                                3. Fluorine
                                                                                                                                                  1. Advantages
                                                                                                                                                    1. Protect teeth
                                                                                                                                                      1. Protect against heart disease
                                                                                                                                                        1. Added in small amounts
                                                                                                                                                        2. Disadvantages
                                                                                                                                                          1. Fluorosis
                                                                                                                                                            1. Teeth porous & stain
                                                                                                                                                            2. Weak bones
                                                                                                                                                              1. Ethically wrong
                                                                                                                                                                1. Can't set safe limits
                                                                                                                                                                  1. Associated with Alzheimers
                                                                                                                                                            3. Analysis & Synthesis
                                                                                                                                                              1. Positive Ions
                                                                                                                                                                1. Flame Tests
                                                                                                                                                                  1. Put Nichrome wire in H2SO4
                                                                                                                                                                    1. Wire in sample
                                                                                                                                                                      1. Wire in bunsen burner (Blue Flame)
                                                                                                                                                                    2. Barium > Apple Green Calcium > Brick Red Potassium > Lilac Lithium > Bright Red Sodium > Orange Copper > Blue/Green
                                                                                                                                                                    3. Colour Precipitates
                                                                                                                                                                      1. Add sodium hydroxide to your metal (in solution)
                                                                                                                                                                        1. Form a colour precipitate
                                                                                                                                                                          1. If white precipitate > add NaOH in excess
                                                                                                                                                                            1. Al3+ dissolves leaving Ca2+ & Mg2+
                                                                                                                                                                              1. Flame test to distingush
                                                                                                                                                                        2. Cu2+ > Blue Fe2+ > Green Fe3+ > Brown Al3+ > White Ca2+ > White Mg2+ > White
                                                                                                                                                                      2. Negative Ions
                                                                                                                                                                        1. Carbonates
                                                                                                                                                                          1. Add acid
                                                                                                                                                                            1. bubbles form
                                                                                                                                                                              1. If it turns cloudy (limewater) then it is a carbonate
                                                                                                                                                                          2. Sulphates
                                                                                                                                                                            1. Add HCl to remove any carbonate ions
                                                                                                                                                                              1. Add barium chloride
                                                                                                                                                                                1. White precipitate formed if it is a sulphate
                                                                                                                                                                            2. Halides
                                                                                                                                                                              1. Add Silver Nitrate & Nitric Acid
                                                                                                                                                                                1. Chloride > White Precipitate Bromide > Cream Precipitate Iodide > Yellow Precipitate
                                                                                                                                                                              2. Titrations
                                                                                                                                                                                1. Used to accurately determine how much alkali is need to react completely with a known volume of acid (or visa versa)
                                                                                                                                                                                  1. End Point
                                                                                                                                                                                    1. When acid base reaction is complete
                                                                                                                                                                                    2. Method
                                                                                                                                                                                      1. Wash Pipette (H2O & Alkali)
                                                                                                                                                                                        1. Put known volume alkali into flask using pipette
                                                                                                                                                                                          1. Add Indicator
                                                                                                                                                                                            1. Wash Burette (H2O & Acid)
                                                                                                                                                                                              1. Put acid into Burette
                                                                                                                                                                                                1. Add acid to alkali until indicator reaches its end point
                                                                                                                                                                                                  1. Discard anomalies & repeat 3x until you get 2 identical results
                                                                                                                                                                                                    1. Calculate an average
                                                                                                                                                                                      2. Calculations
                                                                                                                                                                                        1. Balanced Symbol Equation
                                                                                                                                                                                          1. Convert volume into dm3
                                                                                                                                                                                            1. /1000
                                                                                                                                                                                              1. Calculate moles of known substance
                                                                                                                                                                                                1. moles= volume x concentration
                                                                                                                                                                                                  1. Look at equation for ratio
                                                                                                                                                                                                    1. Calculate moles of unknown using the ratio
                                                                                                                                                                                                      1. Calculate unknown concentration
                                                                                                                                                                                                        1. concentration= moles/volume x 1000 (dm3)
                                                                                                                                                                                                          1. Calculate g/mol
                                                                                                                                                                                                            1. RFM x calculated concentration
                                                                                                                                                                                              2. Chemical Analysis
                                                                                                                                                                                                1. Qualitative
                                                                                                                                                                                                  1. What is present?
                                                                                                                                                                                                  2. Quantitative
                                                                                                                                                                                                    1. How much is present?
                                                                                                                                                                                                  3. Chemical Equilibrium
                                                                                                                                                                                                    1. Closed System
                                                                                                                                                                                                      1. Nothing in, Nothing out
                                                                                                                                                                                                      2. The point in a reversible reactions where the forward & reverse rates of the reaction are equal therefore the amount of reactants & products stay the same
                                                                                                                                                                                                      3. Altering Equilibrium
                                                                                                                                                                                                        1. Position of equilibrium shifts to cancel change
                                                                                                                                                                                                          1. If pressure of reactants is increased to maintain equilibrium, less product is formed (and visa versa)
                                                                                                                                                                                                          2. Making Ammonia - The Harber Process
                                                                                                                                                                                                            1. Raw Materials
                                                                                                                                                                                                              1. N2 - Air
                                                                                                                                                                                                                1. H2 from CH4
                                                                                                                                                                                                                  1. Purified over Fe catalyst
                                                                                                                                                                                                                2. High Temperature
                                                                                                                                                                                                                  1. 450C
                                                                                                                                                                                                                  2. Pressure
                                                                                                                                                                                                                    1. 200 Atomspheres
                                                                                                                                                                                                                  3. The Economics of the Haber Process
                                                                                                                                                                                                                    1. Pressure
                                                                                                                                                                                                                      1. increase pressure, increase proudcts
                                                                                                                                                                                                                        1. Advantages
                                                                                                                                                                                                                          1. more product
                                                                                                                                                                                                                          2. Disadvantages
                                                                                                                                                                                                                            1. lots of energy required
                                                                                                                                                                                                                              1. Expensive
                                                                                                                                                                                                                            2. Catalyst
                                                                                                                                                                                                                              1. speed up reaction
                                                                                                                                                                                                                                1. Doesn't affect yield
                                                                                                                                                                                                                                  1. Lowers activation energy
                                                                                                                                                                                                                                  2. Temperature
                                                                                                                                                                                                                                    1. Low temperature means slower rate
                                                                                                                                                                                                                                2. Acid & Alkali
                                                                                                                                                                                                                                  1. Acid
                                                                                                                                                                                                                                    1. A substance that has hydrogen in it. it releases hydrogen ions when it dissoves in water
                                                                                                                                                                                                                                    2. Alkali
                                                                                                                                                                                                                                      1. Made up of a hydroxide. All alkalis are soluble in water.
                                                                                                                                                                                                                                      2. Base
                                                                                                                                                                                                                                        1. Reacts in the same way as a alkali but not soluble in water. Most metal oxides are bases.
                                                                                                                                                                                                                                        2. State symbols
                                                                                                                                                                                                                                          1. (s) solid (l) liquid (g) gas (aq) aqueous (dissolved in water)
                                                                                                                                                                                                                                          2. acid+alkali>salt+water (neutralisation) acid+base>salt+water (neutalisation) acid+metal>salt+hydrogen acid+carbonate>salt+carbon dioxide+water
                                                                                                                                                                                                                                            1. Precipitate reactions
                                                                                                                                                                                                                                              1. 2 soluble salts mixed together to make an insoluble salt & another soluble salt. The insoluble salt is a precipitate.
                                                                                                                                                                                                                                              2. Electrolysis
                                                                                                                                                                                                                                                1. Ionic compounds
                                                                                                                                                                                                                                                  1. To split them into separate elements
                                                                                                                                                                                                                                                    1. That are molten or aqueous
                                                                                                                                                                                                                                                      1. So the ions can move
                                                                                                                                                                                                                                                    2. Positive > Negative Negative > Positive
                                                                                                                                                                                                                                                    3. Positive Anode Negative Is Cathode
                                                                                                                                                                                                                                                      1. Oxidation Is Loss Reduction Is Gain (of electrons)
                                                                                                                                                                                                                                                        1. Electrolysis in solution
                                                                                                                                                                                                                                                          1. Positive Ions
                                                                                                                                                                                                                                                            1. Lower element on the reactivity series goes towards the cathode
                                                                                                                                                                                                                                                            2. Negative Ions
                                                                                                                                                                                                                                                              1. If the ion is a halogen it goes towards the anode. Otherwise hydroxide goes towards anode
                                                                                                                                                                                                                                                            3. Electrolysis of Aluminium
                                                                                                                                                                                                                                                              1. Aluminium Ore > Bauxite
                                                                                                                                                                                                                                                                1. contains aluminium oxide
                                                                                                                                                                                                                                                                  1. Dissolved in molten cryolite
                                                                                                                                                                                                                                                                    1. Reduces melting point
                                                                                                                                                                                                                                                                2. Aluminium used
                                                                                                                                                                                                                                                                  1. very reactive
                                                                                                                                                                                                                                                                    1. light & strong
                                                                                                                                                                                                                                                                      1. layer of aluminium oxide preventing it from reacting
                                                                                                                                                                                                                                                                    2. Electrolysis of Brine
                                                                                                                                                                                                                                                                      1. Brine > sodium chloride solution (aq)
                                                                                                                                                                                                                                                                        1. contains hydrogen, sodium, chloride & hydroxide ions
                                                                                                                                                                                                                                                                          1. Hydrogen ions go to cathode to form hydrogen gas
                                                                                                                                                                                                                                                                            1. Chloride ions go to anode to form chlorine gas
                                                                                                                                                                                                                                                                              1. Sodium Hydroxide left in solution
                                                                                                                                                                                                                                                                          2. Electroplating
                                                                                                                                                                                                                                                                            1. Occurs when electrodes are the same metal as positive ions in solution.
                                                                                                                                                                                                                                                                              1. Anode will not attract negative ions
                                                                                                                                                                                                                                                                                1. Atoms in anode will turn to ions
                                                                                                                                                                                                                                                                          3. Energy from fuels
                                                                                                                                                                                                                                                                            1. Fuel Issues
                                                                                                                                                                                                                                                                              1. Increase in fossil fuels
                                                                                                                                                                                                                                                                                1. Increase in CO2
                                                                                                                                                                                                                                                                                  1. Global Climate Change
                                                                                                                                                                                                                                                                                2. Hydrogen Power
                                                                                                                                                                                                                                                                                  1. Advantages
                                                                                                                                                                                                                                                                                    1. Burns well
                                                                                                                                                                                                                                                                                      1. No pollutants
                                                                                                                                                                                                                                                                                      2. Disadvantages
                                                                                                                                                                                                                                                                                        1. safety & storage issues
                                                                                                                                                                                                                                                                                          1. Electrolysis to make H2
                                                                                                                                                                                                                                                                                            1. Fuel Cell
                                                                                                                                                                                                                                                                                        2. Improving Accuracy
                                                                                                                                                                                                                                                                                          1. reduce heat transfer to environment
                                                                                                                                                                                                                                                                                          2. Energy Changes
                                                                                                                                                                                                                                                                                            1. Bond Breaking
                                                                                                                                                                                                                                                                                              1. Endothermic
                                                                                                                                                                                                                                                                                              2. Bond Making
                                                                                                                                                                                                                                                                                                1. Exothermic
                                                                                                                                                                                                                                                                                                2. Exothermic (-)
                                                                                                                                                                                                                                                                                                  1. Energy required to break bonds is less than energy released when new bonds form
                                                                                                                                                                                                                                                                                                  2. Endothermic (+)
                                                                                                                                                                                                                                                                                                    1. Energy required to break bonds is greater than energy released when new bonds form
                                                                                                                                                                                                                                                                                                    2. Catalysts
                                                                                                                                                                                                                                                                                                      1. Lowers activation energy by providing an alternative pathway
                                                                                                                                                                                                                                                                                                    3. Bond Energies
                                                                                                                                                                                                                                                                                                      1. Identify the bonds - Draw them out
                                                                                                                                                                                                                                                                                                        1. Add up bonds in reactants (breaking)
                                                                                                                                                                                                                                                                                                          1. Add up bonds in products (making)
                                                                                                                                                                                                                                                                                                            1. Bond Breaking + (-Bond Making)
                                                                                                                                                                                                                                                                                                              1. Overall + = endothermic Overall - = exothermic
                                                                                                                                                                                                                                                                                                    4. Organic Chemistry
                                                                                                                                                                                                                                                                                                      1. Alcohol
                                                                                                                                                                                                                                                                                                        1. Functional Group
                                                                                                                                                                                                                                                                                                          1. (-OH)
                                                                                                                                                                                                                                                                                                          2. Homologous Series
                                                                                                                                                                                                                                                                                                            1. Methanol CH3OH
                                                                                                                                                                                                                                                                                                              1. Ethanol C2H5OH
                                                                                                                                                                                                                                                                                                              2. Uses
                                                                                                                                                                                                                                                                                                                1. Alcoholic Drinks
                                                                                                                                                                                                                                                                                                                  1. Fermentation
                                                                                                                                                                                                                                                                                                                  2. Alternative Fuel
                                                                                                                                                                                                                                                                                                                    1. Ethene & Steam
                                                                                                                                                                                                                                                                                                                    2. Mix with H2O
                                                                                                                                                                                                                                                                                                                      1. Dissolve organic compounds
                                                                                                                                                                                                                                                                                                                        1. solvent
                                                                                                                                                                                                                                                                                                                      2. Reactions
                                                                                                                                                                                                                                                                                                                        1. Combustion
                                                                                                                                                                                                                                                                                                                          1. flammable
                                                                                                                                                                                                                                                                                                                            1. form CO2 & H2O
                                                                                                                                                                                                                                                                                                                            2. Sodium
                                                                                                                                                                                                                                                                                                                              1. Na fizzes
                                                                                                                                                                                                                                                                                                                                1. H2 formed
                                                                                                                                                                                                                                                                                                                                2. Oxidation
                                                                                                                                                                                                                                                                                                                                  1. Combustion
                                                                                                                                                                                                                                                                                                                                    1. Potassium Dichromate > Carboxylic Acid
                                                                                                                                                                                                                                                                                                                                      1. Left in air (microbes) > Carboxylic Acid
                                                                                                                                                                                                                                                                                                                                  2. Carboxylic Acids
                                                                                                                                                                                                                                                                                                                                    1. Functional Group
                                                                                                                                                                                                                                                                                                                                      1. (-COOH)
                                                                                                                                                                                                                                                                                                                                      2. Homologous Series
                                                                                                                                                                                                                                                                                                                                        1. Methanoic Acid HCOOH
                                                                                                                                                                                                                                                                                                                                          1. Ethanoic Acid CH3COOH
                                                                                                                                                                                                                                                                                                                                          2. Acidic when dissolved in H2O
                                                                                                                                                                                                                                                                                                                                            1. Same reaction as other acids (e.g. HCl)
                                                                                                                                                                                                                                                                                                                                              1. Not strong acids
                                                                                                                                                                                                                                                                                                                                                1. Partially dissociate into their ions
                                                                                                                                                                                                                                                                                                                                              2. Esters
                                                                                                                                                                                                                                                                                                                                                1. Functional Group
                                                                                                                                                                                                                                                                                                                                                  1. RCOOCR
                                                                                                                                                                                                                                                                                                                                                  2. Homologous Series
                                                                                                                                                                                                                                                                                                                                                    1. Ethyl Ethanoate CH3COOC2H5
                                                                                                                                                                                                                                                                                                                                                    2. Carboxylic Acid + Alcohol > Ester + Water
                                                                                                                                                                                                                                                                                                                                                      1. Distinctive Smells
                                                                                                                                                                                                                                                                                                                                                        1. fruity/sweet
                                                                                                                                                                                                                                                                                                                                                        2. Uses
                                                                                                                                                                                                                                                                                                                                                          1. artificial flavourings
                                                                                                                                                                                                                                                                                                                                                        3. Organic Issues
                                                                                                                                                                                                                                                                                                                                                          1. Ethanol in drinks
                                                                                                                                                                                                                                                                                                                                                            1. Advantages
                                                                                                                                                                                                                                                                                                                                                              1. Relaxant
                                                                                                                                                                                                                                                                                                                                                                1. Socially acceptable drug
                                                                                                                                                                                                                                                                                                                                                                  1. Cheap
                                                                                                                                                                                                                                                                                                                                                                  2. Disadvantages
                                                                                                                                                                                                                                                                                                                                                                    1. affects health
                                                                                                                                                                                                                                                                                                                                                                      1. high BP, heart disease, liver damage
                                                                                                                                                                                                                                                                                                                                                                      2. addictive
                                                                                                                                                                                                                                                                                                                                                                        1. expensive if addicted
                                                                                                                                                                                                                                                                                                                                                                          1. lost days at work
                                                                                                                                                                                                                                                                                                                                                                            1. policing anti-social behaviour
                                                                                                                                                                                                                                                                                                                                                                          2. Ethanol as Biofuel
                                                                                                                                                                                                                                                                                                                                                                            1. Advantages
                                                                                                                                                                                                                                                                                                                                                                              1. saves fossil fuels
                                                                                                                                                                                                                                                                                                                                                                                1. Carbon Neutral
                                                                                                                                                                                                                                                                                                                                                                                2. Disadvantages
                                                                                                                                                                                                                                                                                                                                                                                  1. land used could grow crops
                                                                                                                                                                                                                                                                                                                                                                                    1. destruction of habitats
                                                                                                                                                                                                                                                                                                                                                                                      1. increase in CO2 in air
                                                                                                                                                                                                                                                                                                                                                                                    2. Esters as Biofuels
                                                                                                                                                                                                                                                                                                                                                                                      1. Biodiesel
                                                                                                                                                                                                                                                                                                                                                                                        1. Made from plant oils
                                                                                                                                                                                                                                                                                                                                                                                          1. Carboxylic Acid + Alcohol > Esters
                                                                                                                                                                                                                                                                                                                                                                                    Mostrar resumen completo Ocultar resumen completo

                                                                                                                                                                                                                                                                                                                                                                                    ¿Quieres crear tus propios Mapas Mentales gratis con GoConqr? Más información.

                                                                                                                                                                                                                                                                                                                                                                                    Similar

                                                                                                                                                                                                                                                                                                                                                                                    Using GoConqr to study science
                                                                                                                                                                                                                                                                                                                                                                                    Sarah Egan
                                                                                                                                                                                                                                                                                                                                                                                    Electrolysis
                                                                                                                                                                                                                                                                                                                                                                                    lisawinkler10
                                                                                                                                                                                                                                                                                                                                                                                    Elements, Compounds and Mixtures
                                                                                                                                                                                                                                                                                                                                                                                    silviaod119
                                                                                                                                                                                                                                                                                                                                                                                    Chemistry General Quiz - 2
                                                                                                                                                                                                                                                                                                                                                                                    lauren_johncock
                                                                                                                                                                                                                                                                                                                                                                                    Chemistry Quiz General -3
                                                                                                                                                                                                                                                                                                                                                                                    lauren_johncock
                                                                                                                                                                                                                                                                                                                                                                                    Chemistry Module C2: Material Choices
                                                                                                                                                                                                                                                                                                                                                                                    James McConnell
                                                                                                                                                                                                                                                                                                                                                                                    AS Chemistry - Enthalpy Changes
                                                                                                                                                                                                                                                                                                                                                                                    Sarah H-V
                                                                                                                                                                                                                                                                                                                                                                                    The Periodic Table
                                                                                                                                                                                                                                                                                                                                                                                    asramanathan
                                                                                                                                                                                                                                                                                                                                                                                    Acids and Bases
                                                                                                                                                                                                                                                                                                                                                                                    Sarah Egan
                                                                                                                                                                                                                                                                                                                                                                                    Ionic Bondic Flashcards.
                                                                                                                                                                                                                                                                                                                                                                                    anjumn10
                                                                                                                                                                                                                                                                                                                                                                                    Acids and Bases
                                                                                                                                                                                                                                                                                                                                                                                    silviaod119
                                                                                                                                                                                                                                                                                                                                                                                    Explorar la Librería