Elements, Compounds and Mixtures

Substances
1. Classifying Substances
  1. Flexible and Rigid
  2. Solid, Liquid and Gas
  3. Transparent, Translucent and Opaque
  4. Edible and Non-Edible
  5. Elements and Non-Elements
Periodic Table
1. Symbols
  1. Every element in the Periodic Table has a symbol.
2. There are periods and rows, to organise it.
Combining Elements
1. Reactions Between...
  1. Hydrogen and Oxygen
    1. Squeaky pop and some condensation.
      1. Hydrogen + Oxygen -----> Water
  2. Magnesium and Oxygen
    1. Very bright white flame and there was a white solid left over.
      1. Magnesium + Oxygen -----> Magnesium Oxide
  3. Sodium and Chlorine
    1. White solid,smoke and an orange-yellow flame.
      1. Sodium + Chlorine -----> Sodium Chloride
  4. Aluminium and Iodine
    1. Purple smoke, orange-white spark and there was a white solid left over.
      1. Aluminium + Iodine -----> Aluminium Iodine
Atoms,Elements and Compounds
1. Deciphering the Names of Compounds
  1. Compounds of two elements have an -ide ending.
    1. Magnesium and Oxygen makes Magnesium Oxide
  2. Compounds made up of two elements plus oxygen usually end in -ate.
    1. Copper, Sulphur and Oxygen makes Copper Sulphate
  3. Some compounds have common names as well as chemical names.
    1. Water, Salt and Chalk
2. Atoms Combining
  1. Atoms of one type combine to form molecules of an element.
  2. Atoms of two or more types combine to form molecules of a compound.
3. Elements and Atoms
  1. A substance can not be an element and a compound at the same time because an element has not only got one type of atom but a compound has two types or more.
  2. A substance can not be an atom and a compound at the same time because a single atom has only one type of atom but a compound has two or more types of different atoms.
  3. Atom, Compound,Element and Molecule
4. Compounds
  1. Working out the Formula for a Compound
    1. The Crossover Rule
  2. Compounds can react with other compounds
    1. Sodium carbonate and Iron (II) Chloride
      1. Dark green solid
    2. Dilute Hydrochloric acid and Magnesium Carbonate solid
      1. A white fizz and bubbled
Molecular Models
Metals/Non-Metals
1. Properties of Metals
  1. Good Conductors of Electricity and Heat
  2. Density
    1. (Density=Mass/Weight)
  3. High melting Point
  4. Malleable
    1. (Can be drawn out into wire)
  5. Ductile
    1. (Can be drawn out into wire)
  6. Sonorous
    1. (Rings when struck)
  7. Magnetic
    1. (Iron, cobalt and nickel)
  8. Shiny
2. Properties of Non-Metals
  1. Poor Conductors of Electricity and Heat
  2. Dull
  3. Low melting Point
  4. Brittle
    1. (If solid)

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