Front

What is matter?

Back

Anything that has mass and takes up space (volume).

Front

What is a solid?

Back

A state of matter with a definite shape and volume. Molecules are tightly packed and vibrate in place.

Front

What is a liquid?

Back

A state of matter with no definite shape but a definite volume. Molecules are loosely packed and slide past each other.

Front

What is a gas?

Back

A state of matter with no definite shape and no definite volume. Molecules are very far apart and move freely.

Front

What is melting?

Back

The process of changing from a solid to a liquid.

Front

What is freezing?

Back

The process of changing from a liquid to a solid.

Front

What is condensation?

Back

The process of changing from a gas to a liquid.

Front

What is evaporation?

Back

The process of a liquid changing into a gas on the top of the surface only.

Front

What is boiling?

Back

The process of a liquid changing into a gas throughout the substance.

Front

What is sublimation?

Back

The process of going directly from a solid to a gas.