3.3.4 Ionic Properties

Question 1

Ionic compounds have … melting points

Answer 1

…high…

Question 2

Why do ionic compounds have high melting points?

Answer 2

Ionic compounds have a giant ionic lattice structure with lots of very strong ionic bonds. To break these bonds, a large amount of energy is needed, thus it has a high melting point.

Question 3

Why do some ionic compounds have higher melting points than others?

Answer 3

Some ionic compounds have higher melting points than others because the ions have higher charges. This makes the attraction between the ions even stronger and harder to break.

Question 4

Electrical conductivity requires what two things?

Answer 4

• Charged particles
• that are free to move

Question 5

Can a solid ionic compound conduct electricty?

Answer 5

No because although there are charged particles, these particles are not free to move.

Question 6

Can a liquid or aqueous ionic compound conduct electricity?

Answer 6

Yes because there are charged particles that can move freely.