Changes of State

Evaporation and condensation are both types of vaporization.

• True

• False

The temperature at which a liquid turns to a gas is called the _____ point.

• boiling

• freezing

• amorphous

• crystalline

The temperature at which liquid turns to a gas is called the boiling point.

• True

• False

Vaporization is the reverse of condensation.

• True

• False

Sublimation and boiling both happen at the surface of the substance.

• True

• False

A puddle dries up by the process of _____.

• evaporation

• melting

• freezing

• condensation

Freezing occurs when the particles in liquid slow down and take fixed positions.

• True

• False

Particles of which of the following have the greatest thermal energy?

• a gas

• a liquid

• a solid

• an amorphous solid

When you see fog or clouds, you are seeing water in the ______ state.

• Liquid

• Gas

• Solid

Water particles in gas coming off of a pan of boiling water are moving slower than the particles of the water in the pan.

• true

• false