1. Bell ringer Complete the bonus questions. You must answer the whole question correctly to receive credit. That means you need to have the right set up and correct work. Question one is worth a half of a question, and question two is work a whole question. These will be added to your quiz that you are taking tomorrow.

3. Bell ringer Discuss with your partner how adding anti- freeze in to radiator helps it from freezing in the winter and getting to hot in the summer? Colligative properties of a solution.

4. Colligative Properties Are the properties of a solution that depends only on the number of the solute particles. These properties include vapor-pressure lowering, boiling-point elevation, and freezing-point depression

5. Vapor-pressure: the pressure when vapor particles above a liquid in a sealed container collide with the container walls; a dynamic equilibrium exists between the vapor and the liquid All liquids have a tendency to evaporate into a gaseous form, and all gases have a tendency to condense back to their liquid or solid form.

6. Vapor-pressure lowering: it the lowering of the vapor pressure because of the introduction of a solute

7. Boiling point the pressure at which the vapor pressure of a liquid is just equal to the external pressure of the liquid Boiling point elevation: the difference in the temperature between the boiling point pd a solution and of the pure solvent

8. Freezing point the temperature at which a liquid will turn from a liquid into a solid Freezing point depression: is the difference in the temperature between the freezing point of a solution and the freezing point of a pure substance.