Physical and Chemical Changes

Front

What is a physical change?

Back

A change in which matter changes its appearance but not its chemical composition.

Front

What is a chemical change?

Back

A change in which new substances are formed.

Front

What happens to water when it freezes?

Back

It changes from a liquid to a solid state.

Front

What happens to water when it boils?

Back

It changes from a liquid to a gas state.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Rusting of iron.

Front

What is the state of matter of water at room temperature?

Back

Liquid.

Front

What is the state of matter of ice?

Back

Solid.

Front

What is the state of matter of steam?

Back

Gas.

Front

How can you tell a chemical change has occurred?

Back

New substances with different properties are formed.