1. Latent Heat of Phase Changes

3. There are 3 phases (states) of matter.
Solid- definite shape and volume, has the least energy (ice)
Liquid- takes the shape of its container and has a definite volume, more energy (water)
Gas- takes the shape of its container and its volume can change, even more energy (water vapor) can never be seen !!!!!!

4. Latent heat is the energy needed to change from one phase to another.
Example: in order for ice to change into water it must gain energy
While a phase change is happening all the energy is being used to change the phase and the temperature remains constant.

5. Phase from Phase to Phase change name Latent Heat
There are 4 phase changes :
Phase from
Phase to
Phase change name
Latent Heat
Solid
Liquid
Melt
Gain
Vaporization
Liquid
Gas
Gain
Examples: boiling and evaporation
Gas
Liquid
Condensation
Lost
Liquid
Solid
Freeze
Lost