Chemical Bonding Intervention Questions 2024

Which statement describes ionic bonds?

• a lattice of ions in a 'sea of electrons'

• electrostatic attraction between oppositely charged ions

• the sharing of electrons between atoms to gain a noble gas configuration

• the transfer of electrons from atoms of a non-metal to the atoms of a metal

Which diagram shows the outer electron arrangement in calcium fluoride?

• A

• B

• C

• D

A molecule of sulfuric acid has the structural formula shown. How many electrons are involved in forming all the covalent bonds in one molecule?

• 6

• 8

• 12

• 16

When substance Q melts, only weak forces of attraction between its molecules are overcome. Which row correctly describes Q?

• A

• B

• C

• D

Which statement is correct?

• Diamond conducts electricity while graphite does not.

• Graphite has delocalised ions between its layers.

• In diamond, each carbon atom is joined to three other carbon atoms only.

• The layered structure of graphite makes it slippery.

Which statement is correct for all metals?

• They are hard and brittle.

• They are made up of a lattice of positive and negative ions.

• They conduct electricity by movement of electrons.

• They conduct electricity by movement of ions.