States of Matter and Energy Changes

Front

What happens to the particles in a gas when it is cooled?

Back

They move slower.

Front

What is the smallest unit of a chemical element that retains its chemical properties?

Back

Atom.

Front

What state of matter has a definite shape and volume?

Back

Solid.

Front

What state of matter has a definite volume but no definite shape?

Back

Liquid.

Front

What state of matter has neither a definite shape nor a definite volume?

Back

Gas.

Front

What is the process called when a solid turns into a liquid?

Back

Melting.

Front

What is the process called when a liquid turns into a gas?

Back

Evaporation.

Front

What is the process called when a gas turns into a liquid?

Back

Condensation.

Front

What is the process called when a liquid turns into a solid?

Back

Freezing.

Front

What is a crystal lattice?

Back

A model of an extended structure where particles are arranged in a repeating pattern.