1. Change in state – conversion from one physical form to another

2. Temperature: measures speed of the particles movement
More thermal energy = Temp increases = particles move faster = change in state

3. Melting – from solid to liquid

4. Melting point – temp at which a solid melts
Ex. Water: 0 C or 32 F

5. Freezing – from liquid to solid

6. Freezing point – temp. at which a liquid freezes
Ex. Water: 0 C 32 F

7. Vaporization – change from liquid to a gas
1. Boiling - occurs throughout the liquid
Evaporation – occurs at the surface of the liquid

8. Boiling

9. Evaporation

10. Condensation- gas to a liquid

11. Sublimation – changing from a solid to a gas.
Deposition
Sublimation
Sublimation
Deposition
Deposition
Sublimation

12. Dry Ice

13. Deposition – changing from gas to solid.
Snow – vapor to solid snow flakes
Cirrus clouds – vapor to solid ice crystals

14. Fig. 19 holt