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C2 Quick Revision Questions
C2 for AQA GCSE examination 2018 onwards
Question 1
• What are the 3 main types of chemical bond?
.... of 50
C2 for AQA GCSE examination 2018 onwards
• Ionic, Covalent & Metallic.
Answer 1 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What force bonds atoms in an ionic bond?
Question 2 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Electrostatic attraction.
Answer 2 .... of 50
C2 for AQA GCSE examination 2018 onwards
Question 3
• Why do metals form giant structures?
.... of 50
C2 for AQA GCSE examination 2018 onwards
• Metal atoms are bonded by Metallic bonds.
Answer 3 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What happens to the electrons in metallic bonds?
Question 4 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Electrons are delocalised and shared between the positive metal ions in a ‘sea’ of electrons.
Answer 4 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What are the 3 states of matter?
Question 5 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Solids, Liquid and Gases.
Answer 5 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What is the change in state between a solid and a gas called?
Question 6 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Sublimation.
Answer 6 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Describe the melting points of ionic compounds?
Question 7 .... of 50
C2 for AQA GCSE examination 2018 onwards
• High melting points.
Answer 7 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Why can ionic compounds conduct electricity when molten or dissolved in water?
Question 8 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Ions are free to move, so charge can flow.
Answer 8 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What happens to the melting points as the forces between the ions increases?
Question 9 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Melting points increase.
Answer 9 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What state are substances made up of small molecules usually in?
Question 10 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Gases or liquids.
Answer 10 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What happens to the electrons between atoms in a covalent bond?
Question 11 .... of 50
C2 for AQA GCSE examination 2018 onwards
• The electrons are shared.
Answer 11 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What type of bond would be formed between Sodium and Chlorine?
Question 12 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Ionic bonds.
Answer 12 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What type of bond would be formed between 2 oxygen atoms?
Question 13
C2 for AQA GCSE examination 2018 onwards
• Covalent bonds.
Answer 13 .... of 50
C2 for AQA GCSE examination 2018 onwards
• In sodium chloride, which ion has gained an electron and which has lost an electron
Question 14
C2 for AQA GCSE examination 2018 onwards
• Sodium loses an electron and become +1
• Chlorine gains an electron and becomes -1
Answer 14 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What is formed if 2 pairs of electrons are shared between 2 atoms?
Question 15
C2 for AQA GCSE examination 2018 onwards
• A double covalent bond
Answer 15 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What type of diagram shows how electrons are shared in a molecule?
Question 16
C2 for AQA GCSE examination 2018 onwards
• Dot and cross
Answer 16 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Draw a dot and cross diagram to show Sodium Chloride
Question 17
C2 for AQA GCSE examination 2018 onwards
Answer 17 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Draw a dot and cross diagram for water (H2O)
Question 18
C2 for AQA GCSE examination 2018 onwards
Answer 18 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Draw a dot and cross diagram for water (CH4)
Question 19
C2 for AQA GCSE examination 2018 onwards
Answer 19 .... of 50
C2 for AQA GCSE examination 2018 onwards
• What is the empirical formula for the compound below?
Question 20
C2 for AQA GCSE examination 2018 onwards
Answer 20 .... of 50
C2 for AQA GCSE examination 2018 onwards
• MgO
• Describe metallic bonding?
Question 21
C2 for AQA GCSE examination 2018 onwards
Answer 21 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Positive ions in a sea of moving negative electrons (delocalise electrons)
• Which forces are broken when a metal is melted?
Question 22
C2 for AQA GCSE examination 2018 onwards
Answer 22 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Metallic bonds
• Which forces are broken when an ionic compound is melted?
Question 23
C2 for AQA GCSE examination 2018 onwards
Answer 23 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Ionic bonds
• Why does Magnesium have a higher melting point than Sodium?
Question 24
C2 for AQA GCSE examination 2018 onwards
Answer 24 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Magnesium has more delocalised electrons than sodium.
• Name the 3 states of matter
Question 25
C2 for AQA GCSE examination 2018 onwards
Answer 25 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Solid, liquid, gas
• What happens to the forces between particles in melting?
Question 26
C2 for AQA GCSE examination 2018 onwards
Answer 26 .... of 50
C2 for AQA GCSE examination 2018 onwards
• The forces between particles become less
• What happens to the position and arrangement of particles as a substance is melted?
Question 27
C2 for AQA GCSE examination 2018 onwards
Answer 27 .... of 50
C2 for AQA GCSE examination 2018 onwards
• The distance between particles increases and the arrangement becomes more random.
• When does an ionic compound conduct electricity?
Question 28
C2 for AQA GCSE examination 2018 onwards
Answer 28 .... of 50
C2 for AQA GCSE examination 2018 onwards
• When it is molten or aqueous (dissolved in water)
• What type of structure does Sodium Chloride have?
Question 29
C2 for AQA GCSE examination 2018 onwards
Answer 29 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Giant ionic lattices
• Why do small covalent molecules not conduct electricity?
Question 30
C2 for AQA GCSE examination 2018 onwards
Answer 30 .... of 50
C2 for AQA GCSE examination 2018 onwards
• They do not have charged particles.
• What is a polymer?
Question 31
C2 for AQA GCSE examination 2018 onwards
Answer 31 .... of 50
C2 for AQA GCSE examination 2018 onwards
• A large molecule
• What are the 2 methods of making a polymer?
Question 32
C2 for AQA GCSE examination 2018 onwards
Answer 32 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Addition
• Condensation
• What types of bonds hold monomers together in a polymer?
Question 33
C2 for AQA GCSE examination 2018 onwards
Answer 33 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Covalent bonds
• What are the different chains of polymers held together by?
Question 34
C2 for AQA GCSE examination 2018 onwards
Answer 34 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Intermolecular forces
• Whys does PVC have a low melting point?
Question 35
C2 for AQA GCSE examination 2018 onwards
Answer 35 .... of 50
C2 for AQA GCSE examination 2018 onwards
• It had weak intermolecular forces
• Describe the melting point of a polymer with stronger intermolecular forces.
Question 36
C2 for AQA GCSE examination 2018 onwards
Answer 36 .... of 50
C2 for AQA GCSE examination 2018 onwards
• High melting point
• What feature must a monomer have for additional polymerisation?
Question 37
C2 for AQA GCSE examination 2018 onwards
Answer 37 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Carbon carbon double bond
• What is the structure and bonding of diamond and silicon dioxide?
Question 38
C2 for AQA GCSE examination 2018 onwards
Answer 38 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Giant covalent structure
• Name 2 physical properties of diamond
Question 39
C2 for AQA GCSE examination 2018 onwards
Answer 39 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Lustrous
• very hard
• very high melting point
• insoluble in water
• does not conduct electricity
• Whys does graphite conduct electricity?
Question 40
C2 for AQA GCSE examination 2018 onwards
Answer 40 .... of 50
C2 for AQA GCSE examination 2018 onwards
• It has delocalised electrons
• What is an alloy?
Question 41
C2 for AQA GCSE examination 2018 onwards
Answer 41 .... of 50
C2 for AQA GCSE examination 2018 onwards
• A metal is mixed with another metal to change the overall physical properties.
• Why are metals malleable and ductile?
Question 42
C2 for AQA GCSE examination 2018 onwards
Answer 42 .... of 50
C2 for AQA GCSE examination 2018 onwards
• The layers of atoms are able to slide over one another
• Why are alloys harder than pure metals?
Question 43
C2 for AQA GCSE examination 2018 onwards
Answer 43 .... of 50
C2 for AQA GCSE examination 2018 onwards
• The different sizes of atoms distort the layers in the structure preventing them from sliding over each other.
• How many covalent bonds does each carbon have in diamond?
Question 44
C2 for AQA GCSE examination 2018 onwards
Answer 44 .... of 50
C2 for AQA GCSE examination 2018 onwards
• 4 covalent bonds per carbon
• What is the name of the shape of the carbon arrangement in diamond?
Question 45
C2 for AQA GCSE examination 2018 onwards
Answer 45 .... of 50
C2 for AQA GCSE examination 2018 onwards
• tetrahedral
• Why does diamond not conduct electricity?
Question 46
C2 for AQA GCSE examination 2018 onwards
Answer 46 .... of 50
C2 for AQA GCSE examination 2018 onwards
• It does not have delocalised electrons
• Describe the structure of graphite
Question 47
C2 for AQA GCSE examination 2018 onwards
Answer 47 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Layers of hexagonal rings held together by weak intermolecular forces
• Why can graphite be used as a lubricant?
Question 48
C2 for AQA GCSE examination 2018 onwards
Answer 48 .... of 50
C2 for AQA GCSE examination 2018 onwards
• The layers can slide over each other
• What is a fullerene?
Question 49
C2 for AQA GCSE examination 2018 onwards
Answer 49 .... of 50
C2 for AQA GCSE examination 2018 onwards
• Molecules of carbon atoms with hollow shapes based on hexagonal rings.
• What is a fullerene?
Question 50
C2 for AQA GCSE examination 2018 onwards
Answer 50 .... of 50
C2 for AQA GCSE examination 2018 onwards
• High tensile strength
• High electrical conductivity
• High thermal conductivity
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