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Key Terms

State One of the three forms- solid, liquid, or gas- in which most matter on Earth exists.
Change of State The physical change of matter from one state to another.
Melting The change from the solid to the liquid state of matter.
Freezing The change from the liquid to the solid state of matter.
Evaporation Vaporization that occurs at the surface of a liquid.
Boiling Vaporization that occurs on and below the surface of a liquid.
Condensation The change from the gaseous to the liquid state of matter.
Thermal Expansion The expansion of matter when it is heated.
Created by: harderl01