States of Matter and Phase Changes

Front

What is a solid?

Back

A solid is a state of matter that has a definite shape and a definite volume.

Front

How do particles behave in a solid?

Back

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

Front

What determines the temperature of a substance?

Back

The speed of the molecules determines the temperature.

Front

What is melting?

Back

Melting is the process when a solid becomes a liquid by adding heat.

Front

What is condensation?

Back

Condensation is the process when water vapor cools down to form liquid water.

Front

What is a liquid?

Back

A liquid is a state of matter that has a definite volume but no definite shape.

Front

How do particles behave in a liquid?

Back

Particles in a liquid are close together but can slip past one another.

Front

What is evaporation?

Back

Evaporation is the process when a liquid turns into a gas by adding heat.

Front

What is freezing?

Back

Freezing is the process when a liquid becomes a solid by removing heat.

Front

What is a gas?

Back

A gas is a state of matter that has no definite shape and no definite volume.