Giant ionic substances

Question 1

Where are ionic bonds present?

Answer 1

Between a metal and non-metal

Question 2

How do atoms become ions?

Answer 2

Loss or gain of electrons

Question 3

What is the purpose of electrons being transferred from the metal to the non-metal?

Answer 3

The electronic configurations of both ions are identical to the nearest noble gas

Question 4

What is the definition of ionic bond?

Answer 4

Electrostatic attraction between oppositely charged ions

Question 5

What are giant ionic substances?

Answer 5

Oppositely charged ions occupy a regular giant lattice, with strong ionic bonds between them

Question 6

Describe the melting point of giant ionic substances

Answer 6

Oppositely charged ions are held by strong ionic bonds
Require a large amount of energy to break
High melting/boiling points

Question 7

Describe the solubility of giant ionic substances

Answer 7

Tend to be soluble in water as they dissociate into ions
Can interact with the polar water molecules
Water molecules break down the lattice
Surround each of the ions in solution

Question 8

Describe the conductivity of giant ionic substances

Answer 8

Solid - ions are fixed in a regular lattice and are not mobile therefore giant ionic substances do not conduct electricity when solid
Molten/aqueous solution - ions are mobile & will conduct electricity