1. Phase Changes
Notes

2. Cooling Curve Freezing Curve Low Kinetic Energy Gas Boiling
Condensation
Liquid
Temp (C)
Melting
Freezing
Solid
High Kinetic Energy
Time (min)

3. More Notes
Substances can exist in three states. They are solid, liquid and gas.
They change when the temperature of a substance changes.
When a substance changes from a solid to a liquid, it is called melting.
When it changes from a liquid to a gas, it is called boiling.
Gas particles are moving the most and have the most kinetic energy of the three states.
This is opposite of a solid which has high potential energy.
There is one special phase change which is not common. The change is from a solid to a gas. This is called sublimation.

4. Heating Curve