1. Ch. 8 - Solids, Liquids, & Gases II. Changes in State (p.224-227)  Phase Changes  Heating Curves MATTER

2. A. Phase Changes  Melting  solid to liquid  Freezing  liquid to solid melting point = freezing point

3. A. Phase Changes  Vaporization (boiling)  liquid to gas at the boiling point  Evaporation  liquid to gas below the boiling point  Condensation  gas to liquid

4. A. Phase Changes  Sublimation  solid to gas  EX: dry ice, freeze drying, iodine

5. A. Phase Changes

6. B. Heating Curves  Kinetic Energy  motion of particles  related to temperature  Potential Energy  space between particles  related to phase changes

7. B. Heating Curves Solid - KE  Melting - PE  Liquid - KE  Boiling - PE  Gas - KE 

8. B. Heating Curves  Heat of Fusion  energy required to change from solid to liquid  some attractive forces are broken

9. B. Heating Curves  Heat of Vaporization  energy required to change from liquid to gas  all attractive forces are broken  EX: steam burns, sweating, and… the drinking bird HEATING CURVE