Physical and Chemical Changes

Front

What are chemical changes?

Back

Changes in which one or more new substances are formed.

Front

What are physical changes?

Back

Changes that do not alter the chemical composition of a substance.

Front

What is an example of a chemical change?

Back

Rusting of iron.

Front

What is an example of a physical change?

Back

Melting of ice.

Front

What happens during a chemical change?

Back

The atoms in the substances rearrange to form new substances.

Front

What happens during a physical change?

Back

The form of the substance changes, but its chemical composition remains the same.

Front

What is the process of water changing from a solid to a liquid called?

Back

Melting, which is a physical change.

Front

What is the process of water changing from a liquid to a gas called?

Back

Evaporation, which is a physical change.

Front

What is oxidation?

Back

A chemical change where a substance combines with oxygen, like rusting.

Front

What is the formation of salt (NaCl) an example of?

Back

A chemical change.