Question

The melting points of ionic compounds _____.

1. are very low because ionic bonds are very weak

2. are very high because ionic bonds are very strong

3. are very low because they are liquids at room temperature

4. have no relation to the strength of the ionic bonds

Answer 1

Answer: The melting points of ionic compounds are very high because ionic bonds are very strong.

Step-by-step explanation:

What happens when you heat an ionic compound such as salt? When you heat a substance, its energy increases.

When ions have enough energy to overcome the attractive forces between them, they break away from each other. In other words, the crystal melts to a liquid.

Because ionic bonds are strong, a lot of energy is needed to break them. As a result ionic compounds have high melting points.

Answer 2

The melting points of ionic compounds are very high because ionic bonds are very strong. Ionic bonds are strong because they are held together by strong electrostatic force. In order to break the bonds, a lot of energy is needed. The ions charge and size affect their melting points.

Ionic compounds are hard, brittle, have high boiling points and are insulators.