Ionic compounds

Question 1

Structure of an ionic compound

Answer 1

Ionic compounds are structured in giant ionic lattices -closely packed together in a regular arrangement

Question 2

Advantages of Dot and cross diagram

Answer 2

Helps show how the compound is formed
helps shows the transfer of electrons

Question 3

Disadvantages of Dot and cross diagram

Answer 3

It doesn’t show the structure, arrangement or relative size of the ions

Question 4

Advantages of 3D models

Answer 4

They show the relative size of the ions and shows the regular pattern of the lattice

Question 5

Disadvantages of 3D models

Answer 5

Only lets you see the outer layer

Question 6

Advantages of Ball and stick models

Answer 6

Shows the regular pattern, sizes of ions, and their arrangement.

Question 7

Disadvantage of ball and stick models

Answer 7

Suggests that there are gaps when in reality there aren’t any

Question 8

What are the three properties of Ionic compounds?

Answer 8

High melting and boiling points
High solubility (easily dissolvable)
Good electrical conductor

Question 9

High Melting and boiling point

Answer 9

Bonds are held with strong electrostatic forces of attraction.
This means you will need more energy to overcome the bonds

Question 10

Solubility

Answer 10

Able to dissolve easily

Question 11

Electrical conductivity

Answer 11

It cannot carry a charge when solid.
If melted or dissolved can carry a charge as the ions are free to move.