Study Guide Phase change

Front

What is a solid?

Back

A state of matter that has a fixed shape and volume, with particles that vibrate in place.

Front

What happens to particle energy when a substance changes from a liquid to a gas?

Back

Particle energy increases.

Front

What is the boiling point?

Back

The temperature at which a liquid turns into a gas.

Front

What effect does higher temperature have on diffusion in liquids?

Back

Diffusion speeds up in both liquids because molecules move faster at higher temperatures.

Front

What is a liquid?

Back

A state of matter that has a fixed volume but no fixed shape.

Front

What is the freezing point?

Back

The temperature at which a liquid turns into a solid.

Front

What is the melting point?

Back

The temperature at which a solid turns into a liquid.

Front

What is plasma?

Back

A state of matter where gas is energized until atomic electrons are no longer associated with the nucleus.

Front

What is the difference between a gas and a liquid?

Back

A gas has neither a fixed shape nor a fixed volume, while a liquid has a fixed volume but takes the shape of its container.

Front

What is thermal energy?

Back

The total energy of all the particles in a substance, related to temperature.