C3.4 Giant Ionic Structures

Question 1

Why do Ionic Compound have a high melting point?

Answer 1

• Because it takes a lot of energy to break the many strong ionic bonds operating in all directions,that hold a giant ionic lattice together.
• All solids at room temperature.

Question 2

Why do Ionic Compounds conduct electricity when molten or dissolved in water?

Answer 2

-Because the ions can become mobile and carry charge through the liquid.

Question 3

What are oppositely charged ions held by in an ionic compound?

Answer 3

Electrostatic Forces.

Question 4

What happens with Ionic Solids under charge (electricity)?

Answer 4

• Ions fixed in position with giant lattice.
• Vibrate but cannot move around.
• DO NOT condcut electricity.

Question 5

What happens with Molten ionic compounds under charge(electricity)?

Answer 5

• High temperature would supply enough energy to overcome many strong attractive forces between ions.
• Ions are free to move within the molten compund.
• It DOES conduct electricity.

Question 6

What happens with Ionic compounds in solution(liquid) under charge(electricity)?

Answer 6

• The water molecules would seperate ions from lattice.
• Ions free to move around in solution.
• It DOES conduct electricity.

Question 7

When a solid ionic compund melts it turns into?

Answer 7

Molten Ionic Compound

Question 8

When a solid ionic compound dissolves in water it turns into?

Answer 8

Ionic Compund in solution