C4 - Ionic bonding

Question 1

What is an ion?

Answer 1

An ion is a charged atom or a group of atoms with a positive or negative charge.

Question 2

What is a molecule?

Answer 2

A molecule has one to more atom in its formula.

Question 3

What type of atom is an atom that has too many electrons and needs to lose them?

Answer 3

A metal atom.

Question 4

What type of atom is an atom that has too few electrons and needs to gain them?

Answer 4

A non-metal atom.

Question 5

Does the metal become positive or negative?

Answer 5

It becomes positive because it loses electrons.

Question 6

Does the non-metal become positive or negative?

Answer 6

It becomes negative because it gains electrons.

Question 7

Why do some molecules have high melting points?

Answer 7

This is because the ions form giant lattice structures that need a lot of energy to break down.

Question 8

Why do some molecules not conduct electricity?

Answer 8

This is because the ions are not able to move (they are in a fixed position).