C3

Question 1

Molecule

Answer 1

Two or more atoms joined together

Question 2

Diamtomic molecules

Answer 2

Molecules composed of two of the same atom e.g O2 or F2

Question 3

Properties of a covalent compound

Answer 3

Insulator, low melting point

Question 4

When do metallic substances conduct electricity

Answer 4

When in liquid or solid state

Question 5

Challenging definition of covalent bonding

Answer 5

The electrostatic attraction between the nucleus and the shared pair of electrons

Question 6

Structure of diamond

Answer 6

Tetrohedral with 4 covalent bonds per atom

Question 7

Structure of silicon dioxide

Answer 7

Made up of linear triomatic molecules, similar structure to diamond but it has oxygen atoms

Question 8

Properties of ionic bonds

Answer 8

Conduct electricity as a liquid only, high melting point

Question 9

Which substances conduct electricity when solid

Answer 9

Sodium and carbon nanotubes

Question 10

GCSE definition of covalent bonding

Answer 10

Two atoms sharing a pair of electrons