States of Matter

Front

What is a chemical change?

Back

A chemical change creates a new substance.

Front

What characterizes a gas?

Back

A gas has fast-moving particles.

Front

Define a liquid.

Back

A liquid has a definite volume and an indefinite shape.

Front

What is thermal energy?

Back

Thermal energy is heat energy.

Front

What determines the temperature of a substance?

Back

The speed of the molecules determines the temperature.

Front

What is the state of matter with a definite shape and volume?

Back

A solid has a definite shape and volume.

Front

What happens to the particles in a solid?

Back

Particles in a solid are closely packed and vibrate in place.

Front

What is the process of changing from a liquid to a gas called?

Back

The process is called evaporation.

Front

What is the process of changing from a gas to a liquid called?

Back

The process is called condensation.

Front

What is the state of matter with an indefinite shape and volume?

Back

A gas has an indefinite shape and volume.