1. Changes in State Phase Changes Heating Curves
MATTER
Solids, Liquids, & Gases
Changes in State
Phase Changes
Heating Curves

2. melting point = freezing point
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 Gas - KE  Boiling - PE  Liquid - KE 
Melting - PE 
Solid - 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