Question

1. condensation

a phase from a _ to a _

1. freezing

a phase change from a _ to a _

1. sublimation

a phase change from a solid to a gas

1. evaporation

a phase change from a _ to a _

1. melting

a phase change from a _ to a _

Explanation:

Condensation is a phase - change from gas to liquid. Freezing is from liquid to solid. Evaporation is from liquid to gas. Melting is from solid to liquid.

Answer:

1. Gas; Liquid
2. Liquid; Solid
3. Liquid; Gas
4. Solid; Liquid