1. 3.3 Phase Changes What are six common phase changes?
What happens to a substance’s temperature and a system’s energy during a phase change?
How does the arrangement of water molecules change during melting and freezing?
How are evaporation and boiling different?

2. 3.3 Phase Changes
Characteristics of Phase Changes A. One way to recognize a phase change is by measuring the temperature of the substance. B. Temperature DOES NOT change during a phase change.

3. 3.3 Phase Changes
C. Energy is either absorbed or released during a phase change. 1. Endothermic change- energy is absorbed from its surroundings. 2. Exothermic change- energy is released to the surroundings.

4. 3.3 Phase Changes
Gas
Solid Liquid

5. 3.3 Phase Changes
Gas Solid Liquid

6. 3.3 Phase Changes
Gas Solid Liquid

7. 3.2 Changes of Matter
Gas Solid Liquid

8. 3.2 Changes of Matter
Gas Solid Liquid

9. 3.2 Changes of Matter
Gas Solid Liquid

10. 3.3 Phase Changes
Gas Solid Liquid

11. 3.3 Phase Changes
Heat Energy
Temperature

12. 3.3 Phase Changes
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