Unit 1 Review: Solids, Liquids, and Gases, Density, and Mixtures

Front

What happens to the molecules of a solid when it is heated?

Back

They move faster.

Front

Which statement is correct about a sample of liquid water?

Back

It has definite volume but no definite shape.

Front

What is an example of a pure substance?

Back

Gold.

Front

What state of matter takes the shape of its container and has molecules that are far apart and in continuous motion?

Back

Gas.

Front

Which of the following is a pure substance?

Back

Helium.

Front

What is the definition of a solid?

Back

A state of matter with a definite shape and volume.

Front

What is the definition of a liquid?

Back

A state of matter with a definite volume but no definite shape.

Front

What is the definition of a gas?

Back

A state of matter with no definite shape or volume.

Front

What is density?

Back

Density is the mass of an object divided by its volume.

Front

How does temperature affect the state of matter?

Back

Increasing temperature can change solids to liquids and liquids to gases.