1. Properties of Ionic Compounds
Form crystalline solids

2. Properties of Ionic Compounds
Very, very high melting points
Very, very high boiling points
Bonds are very strong so it’s hard to move the molecules apart

3. Properties of Ionic Compounds
Very strong
Takes a lot of force to break them
Very Brittle
Given enough force it shatters

4. Ions in Solution Conduct electricity
Electrons can move from ion to ion freely, so an electrical current can move through the solution.

5. Ions in Solution Increase boiling point
Ions attract the solvent molecules
Takes more energy to pull the solvent molecules far enough apart to become a gas.

6. Ions in Solution Decrease freezing point
The ions are stuck between solvent molecules.
The energy level must be lower for the solution to freeze