AQA C1 and C2 summary questions

Which statement describes the bonding in sodium chloride?

• A shared pair of electrons between two atoms leading to a noble gas configuration.

• A strong force of attraction between oppositely charged ions.

• A strong force of attraction between two molecules.

• A weak force of attraction between oppositely charged ions.

The ‘lead’ in a pencil is made of a mixture of graphite and clay.

When the percentage of graphite is increased, the pencil moves across the paper more easily. Which statement explains this observation?

• Graphite has a high melting point

• Graphite is a form of carbon.

• Graphite is a lubricant.

• Graphite is a non-metal.

Which statement about metals is not correct?

• They conduct electricity because delocalised electrons can move throughout the metal.

• They consist of layers of atoms that can slide over each other

• They have a giant lattice of oppositely charged ions in a ‘sea’ of delocalised electrons

• They have a giant lattice of positive ions in a ‘sea’ of delocalised electrons.

Chlorine, bromine and iodine are elements in Group VII of the Periodic Table. Which statement about these elements is correct?

• The colour gets lighter down the group.

• The density decreases down the group

• They are all gases at room temperature and pressure.

• They are all non-metals.

Which row describes the properties of a typical transition element?

• A

• B

• C

• D

Which statement about the noble gases is correct?

• Noble gases are diatomic molecules.

• Noble gases are reactive gases.

• Noble gases have full outer electron shells.

• The noble gases are found on the left-hand side of the Periodic Table.

What is a property of all metals?

• conducts electricity

• hard

• low melting point

• reacts with water

Which statement explains why aluminium is used in the manufacture of aircraft?

• It conducts heat well

• It has a low density.

• It is a good insulator.

• It is easy to recycle.

Which pair of atoms contains the same number of neutrons?

• A

• B

• C

• D

Period 3 of the Periodic Table is shown

What increases from Na to Ar across Period 3?

• density

• melting point

• non-metallic character

• the number of electron shells