Answer
A phase change is when a substance changes state to either solid, liquid, gas, or plasma. This occurs due to condensation, melting, freezing, vaporization, sublimation, and deposition.
Work Step by Step
Condensation - liquid to solid
Melting - solid to liquid
Condensation - gas to liquid
Vaporization - liquid to gas
Sublimation - solid to gas
Deposition - gas to solid