Phases of Matter Review

Front

What happens to molecules as you increase the temperature of a substance?

Back

The molecules move faster.

Front

Of the different phases of matter, which is the only phase with a definite shape?

Back

Solid.

Front

What must change in order for a phase change to occur?

Back

Heat energy must increase OR decrease.

Front

What is the process called when water vapor in the air becomes liquid water drops?

Back

Condensation.

Front

How are liquids and gases similar?

Back

They both take the shape of their container.

Front

What is the phase of matter that has a definite volume but no definite shape?

Back

Liquid.

Front

What is the phase of matter that has no definite shape or volume?

Back

Gas.

Front

What is the process of a solid turning into a liquid called?

Back

Melting.

Front

What is the process of a liquid turning into a solid called?

Back

Freezing.

Front

What happens to the molecules in a solid when it is heated?

Back

They vibrate faster and may eventually melt.