1007081
Descrição
Quiz por Nicole Saville, atualizado more than 1 year ago
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Criado por Nicole Saville
mais de 10 anos atrás
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Questão 1
Questão
What do ionic bonds form between?
Responda
-
Metals and metals
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Metals and non-metals
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Halogens and alkali metals
-
Carbon atoms
Questão 2
Questão
What is ionic bonding?
Responda
-
The transfer of electrons between atoms in order to become stable
-
A shared pair of electrons
-
Strong electrostatic forces of attraction between positive ions and a sea of de-localised electrons
Questão 3
Questão
What happens to metal atoms during ionic bonding?
Responda
-
They lose electrons
-
The gain electrons
-
They pair up
-
They are not involved in ionic bonding
Questão 4
Questão
What happens if an atom gains electrons?
Responda
-
A positive ion is formed
-
A negative ion is formed
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oxidation
Questão 5
Questão
During the bonding of magnesium oxide:
Responda
-
Magnesium atoms lose electrons to become Mg-
-
Magnesium atoms lose electrons to become Mg2+
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Magnesium atoms gain an electron to become Mg
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Oxygen atoms gain electrons to become O2-
-
Oxygen atoms lose electrons to become O+
Questão 6
Questão
What are positive ions and negative ions held together by?
Responda
-
Glue
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Weight
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Attraction
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Love
Questão 7
Questão
A sodium atoms only has one electron to lose but an oxygen atom needs to gain two electrons, what happens?
Responda
-
They compromise and sodium gives one and a half electrons to oxygen
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Two sodium atoms bond with one oxygen atom
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Two oxygen atoms bond with one sodium atom
Questão 8
Questão
What is the structure of Sodium Chloride?
Responda
-
Covalent lattice
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Giant ionic lattice
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Ionic sphere
Questão 9
Questão
When can sodium chloride conduct electricity?
Responda
-
In a solution
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When it's molten
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When it's a solid
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When its extremely cold
Questão 10
Questão
Sodium chloride and magnesium oxide have:
Responda
-
High melting points
-
Low boiling points
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Strong electrostatic attractions between ions
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weak intermolecular forces
Questão 11
Questão
The melting point of MgO is higher than NaCl because magnesium ions are smaller so they can get closer to oxygen ions, making the bond stronger therefore more energy is needed to break the bonds.
Responda
- True
- False
Questão 12
Questão
Covalent bonding occurs between...
Responda
-
Non-metals and non-metals
-
Metals and metals
-
Metals and non-metals
Questão 13
Questão
What is covalent bonding?
Responda
-
A shared pair of electrons between atoms
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The donation of electrons from one atom to another
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Ions which are held together by attraction
Questão 14
Questão
What substances have low melting points due to their simple molecular structure?
Responda
-
Sodium chloride
-
Carbon dioxide
-
Water
-
Graphite
Questão 15
Questão
Why does carbon dioxide not conduct electricity?
Responda
-
There are no free electrons
-
It's not a metal and only metals conduct electricity
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It's not a solid and only solids conduct electricity
Questão 16
Questão
Who arranged the elements in order in a table and left gaps where he thought new elements would be found?
Responda
-
Mendeleev
-
Newlands
-
Bohr
Questão 17
Questão
What are the properties of alkali metals (group 1 elements)
Responda
-
They react vigorously with water
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The metal reacts with water to make a metal hydroxide
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When they react with water hydrogen is given off
Questão 18
Questão
As you go down group 1...
Responda
-
reactivity increases
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melting point increases
-
melting point decreases
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reactivity decreases
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density increases
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They become harder
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they become softer
Questão 19
Questão
If electrons are lost, the process is called...
Responda
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reduction
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oxidation
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displacement
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saponification
Questão 20
Questão
What's the first step to carrying out a flame test?
Responda
-
The flame wire is moistened in dilute hydrochloric acid
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The flame test wire is dipped into the solid chemical
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Lithium, potassium or sodium are burnt
Questão 21
Questão
If the flame burns red, what element is present?
Responda
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Lithium
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Potassium
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Sodium
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Rubidium
Questão 22
Questão
If potassium is present in a compound, what colour will the flame burn?
Responda
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red
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lilac
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yellow
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orange
Questão 23
Questão
What colour and state is bromine at room temperature and what can it be used for?
Responda
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Orange
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Black
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Colourless
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Solid
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Liquid
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Used in fire extinguishers and plastics
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Used in cooking
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Used as a disinfectant
Questão 24
Questão
The reactivity of halogens increases as you go down group 7
Responda
- True
- False
Questão 25
Questão
If a halogen is bubbled through a solution of a metal halide, what are the two possible outcome?
Responda
-
A displacement reaction
-
No reaction
-
A redox reaction
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A precipitate reaction
Questão 26
Questão
What colours are these transition metal compounds?
Responda
-
Copper compounds are often blue Iron (II) compounds are often grey Iron (III) compounds are often green
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Copper compounds are often orange Iron (II) compounds are often brown Iron (III) compounds are often blue/grey
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Copper compounds are often blue Iron (II) compounds are often green Iron (III) compounds are often orange/brown
Questão 27
Questão
Transition metals can often be used as catalysts, e.g....
Responda
-
Nickel in the manufacture of margarine
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Iron in the haber process
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Yeast in fermentation
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Tin in the contact process
Questão 28
Questão
If a transition metal carbonate is heated, it undergoes thermal decomposition and forms what?
Responda
-
Metal oxide + carbon dioxide
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Metal halide + water
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Metal hydroxide + water
Questão 29
Questão
Sodium hydroxide solution reacts with compounds of each transition metal to make a solid of a particular colour. What is the name of this type of reaction?
Responda
-
Precipitation
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Thermal decomposition
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Displacement
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Redox
Questão 30
Questão
What colour is the precipitate formed by sodium hydroxide and iron(III)?
Responda
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A blue solid
-
A green gelatinous solid
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An orange/brown gelatinous soild
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A grey/white solid
Questão 31
Questão
What are the physical properties of metals?
Responda
-
Ductile
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Malleable
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Sonorous
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Good thermal conductors
-
Poor electrical conductors
Questão 32
Questão
Metals have high melting and boiling points due to their strong metallic bonds
Responda
- True
- False
Questão 33
Questão
What's a metallic bond?
Responda
-
A strong force of electrostatic attraction between close-packed positive ions and a sea of de-localised electrons
-
A shared pair of electrons
-
When to metals are melted together
Questão 34
Questão
Why do metals conduct electricity?
Responda
-
The delocalised electrons can move easily and create a current
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The positive ions can move around
Questão 35
Questão
What's a superconductor?
Responda
-
A material that conducts electricity with little or no resistance
-
A material that conducts electricity at very high temperatures
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A material that can conduct electricity in space
Questão 36
Questão
What are the benefits of super conductors?
Responda
-
Loss-free power transmittion
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Super-fast electronic circuits
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powerful electromagents
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They're cheap to make
Questão 37
Questão
What is sedimentation?
Responda
-
chemicals are added to make solid particles and bacteria settle out
-
sediment is added to water
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Water is passed through sand to get rid of fine particles
Questão 38
Questão
Filtration of water is when a layer of sand on gravel filters out the remaining fine particles
Responda
- True
- False
Questão 39
Questão
What does chlorination do?
Responda
-
Kills microbes
-
Changes the taste of the water
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Adds chlorine for nutritional value
Questão 40
Questão
Barium chloride + magnesium sulphate -->
Responda
-
Barium sulphate (white precipitate) + magnesium chloride
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Barium sulphate (yellow precipitate) + sodium chloride
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Barium chloride (white precipitate) + magnesium + carbon dioxide
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Barium sulphate (yellow precipitate) + magnesium chloride
Questão 41
Questão
What chemical can be used to test water?
Responda
-
silver hydroxide
-
silver nitrate
-
Copper nitrate
-
copper carbonate
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