C1 Quick Revision Questions - WordPress.com · C2 Quick Revision Questions C2 for AQA GCSE examination 2018 onwards . Question 1 •What are the 3 main types of chemical bond?

C2 Quick Revision Questions

C2 for AQA GCSE examination 2018 onwards

Question 1

• What are the 3 main types of chemical bond?

.... of 50


• Ionic, Covalent & Metallic.

Answer 1 .... of 50


• What force bonds atoms in an ionic bond?

Question 2 .... of 50


• Electrostatic attraction.

Answer 2 .... of 50


Question 3

• Why do metals form giant structures?

.... of 50


• Metal atoms are bonded by Metallic bonds.

Answer 3 .... of 50


• What happens to the electrons in metallic bonds?



• Electrons are delocalised and shared between the positive metal ions in a ‘sea’ of electrons.

Answer 4 .... of 50


• What are the 3 states of matter?



• Solids, Liquid and Gases.

Answer 5 .... of 50


• What is the change in state between a solid and a gas called?



• Sublimation.

Answer 6 .... of 50


• Describe the melting points of ionic compounds?



• High melting points.

Answer 7 .... of 50


• Why can ionic compounds conduct electricity when molten or dissolved in water?



• Ions are free to move, so charge can flow.

Answer 8 .... of 50


• What happens to the melting points as the forces between the ions increases?



• Melting points increase.

Answer 9 .... of 50


• What state are substances made up of small molecules usually in?



• Gases or liquids.

Answer 10 .... of 50


• What happens to the electrons between atoms in a covalent bond?



• The electrons are shared.



• What type of bond would be formed between Sodium and Chlorine?



• Ionic bonds.



• What type of bond would be formed between 2 oxygen atoms?

Question 13


• Covalent bonds.



• In sodium chloride, which ion has gained an electron and which has lost an electron

Question 14


• Sodium loses an electron and become +1

• Chlorine gains an electron and becomes -1



• What is formed if 2 pairs of electrons are shared between 2 atoms?

Question 15


• A double covalent bond



• What type of diagram shows how electrons are shared in a molecule?

Question 16


• Dot and cross



• Draw a dot and cross diagram to show Sodium Chloride

Question 17




• Draw a dot and cross diagram for water (H2O)

Question 18




• Draw a dot and cross diagram for water (CH4)

Question 19




• What is the empirical formula for the compound below?

Question 20




• MgO

• Describe metallic bonding?

Question 21




• Positive ions in a sea of moving negative electrons (delocalise electrons)

• Which forces are broken when a metal is melted?

Question 22




• Metallic bonds

• Which forces are broken when an ionic compound is melted?

Question 23




• Ionic bonds

• Why does Magnesium have a higher melting point than Sodium?

Question 24




• Magnesium has more delocalised electrons than sodium.

• Name the 3 states of matter

Question 25




• Solid, liquid, gas

• What happens to the forces between particles in melting?

Question 26




• The forces between particles become less

• What happens to the position and arrangement of particles as a substance is melted?

Question 27




• The distance between particles increases and the arrangement becomes more random.

• When does an ionic compound conduct electricity?

Question 28




• When it is molten or aqueous (dissolved in water)

• What type of structure does Sodium Chloride have?

Question 29




• Giant ionic lattices

• Why do small covalent molecules not conduct electricity?

Question 30




• They do not have charged particles.

• What is a polymer?

Question 31




• A large molecule

• What are the 2 methods of making a polymer?

Question 32




• Addition

• Condensation

• What types of bonds hold monomers together in a polymer?

Question 33




• Covalent bonds

• What are the different chains of polymers held together by?

Question 34




• Intermolecular forces

• Whys does PVC have a low melting point?

Question 35




• It had weak intermolecular forces

• Describe the melting point of a polymer with stronger intermolecular forces.

Question 36




• High melting point

• What feature must a monomer have for additional polymerisation?

Question 37




• Carbon carbon double bond

• What is the structure and bonding of diamond and silicon dioxide?

Question 38




• Giant covalent structure

• Name 2 physical properties of diamond

Question 39




• Lustrous

• very hard

• very high melting point

• insoluble in water

• does not conduct electricity

• Whys does graphite conduct electricity?

Question 40




• It has delocalised electrons

• What is an alloy?

Question 41




• A metal is mixed with another metal to change the overall physical properties.

• Why are metals malleable and ductile?

Question 42




• The layers of atoms are able to slide over one another

• Why are alloys harder than pure metals?

Question 43




• 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




• 4 covalent bonds per carbon

• What is the name of the shape of the carbon arrangement in diamond?

Question 45




• tetrahedral

• Why does diamond not conduct electricity?

Question 46




• It does not have delocalised electrons

• Describe the structure of graphite

Question 47




• Layers of hexagonal rings held together by weak intermolecular forces

• Why can graphite be used as a lubricant?

Question 48




• The layers can slide over each other

• What is a fullerene?

Question 49




• Molecules of carbon atoms with hollow shapes based on hexagonal rings.

• What is a fullerene?

Question 50




• High tensile strength

• High electrical conductivity

• High thermal conductivity

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C1 Quick Revision Questions - WordPress.com · C2 Quick Revision Questions C2 for AQA GCSE examination 2018 onwards . Question 1 •What are the 3 main types of chemical bond?