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

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Presentation on theme: "Ch. 8 - Solids, Liquids, & Gases II. Changes in State (p.224-227)  Phase Changes  Heating Curves MATTER."— Presentation transcript:

1 Ch. 8 - Solids, Liquids, & Gases II. Changes in State (p )  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


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