Changing Phases

Front

What are the four main phases of matter?

Back

Solid, Liquid, Gas, Plasma.

Front

What is a solid?

Back

A phase of matter with a definite shape and volume, where molecules are closely packed together.

Front

What is a liquid?

Back

A phase of matter that has a definite volume but takes the shape of its container, with molecules that are close but can move past each other.

Front

What is a gas?

Back

A phase of matter that has no definite shape or volume, with molecules that are far apart and move freely.

Front

What is plasma?

Back

A phase of matter similar to gas but with charged particles, found in stars and fluorescent lights.

Front

What happens to molecules in a solid when they gain energy?

Back

They vibrate more and may eventually change to a liquid.

Front

What is condensation?

Back

The process where a gas changes into a liquid, often seen as water droplets on a cold surface.

Front

What is evaporation?

Back

The process where a liquid changes into a gas, usually occurring at the surface of the liquid.

Front

What is sublimation?

Back

The process where a solid changes directly into a gas without becoming a liquid first.

Front

What is deposition?

Back

The process where a gas changes directly into a solid without becoming a liquid first.