Heating+and+Cooling+Curves

Quickwrite Focus Question - What causes phase changes?
=**Heating Curve**=



=**Heating Curve Experiment**= []

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Cooling Curve
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**Key Points:**
1. During a phase change, heat changes, but temperature stays the same.

2. During a phase change, two states of matter exist at the same time.

3. Disorder / choas / entrophy increases with an increase in heat.

4. Changing from a liquid to a solid takes a longer time than changing from a solid to a liquid.

5. Another words for heat is enthalpy.

6. Entrophy decreases when enthalpy decreases.

7. Melting point and freezing point happen at the same temperature.

8. Condensation point and boiling point happen at the same temperature.

9. Exothermic change happens when heat is released and is associated with the heating curve.

10. Endothermic change happens when heat is absorbed and is associated with the cooling curve.

=**Homework Review**= []

**Vocabulary Review.** Using the box below, Take three words in a row and write a sentence that combines all three words in scientifically correct way.

 * =entropy= || =solid= || =condensation= ||
 * =vapor= || =temperature= || =phase change= ||
 * =liquid= || =melting= || =enthaply= ||

=**Heating and Cooling Curves Quiz**=