Physical vs Chemical Changes

Front

What is a chemical change?

Back

A process that results in the formation of one or more new substances with different properties.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Give an example of a chemical change.

Back

Decomposing water into hydrogen and oxygen.

Front

Give an example of a physical change.

Back

Melting of ice.

Front

What happens to the chemical bonds during a chemical change?

Back

Chemical bonds are broken and new bonds are formed.

Front

What happens to the chemical bonds during a physical change?

Back

Chemical bonds remain intact; only physical properties change.

Front

What is an indicator of a chemical change?

Back

A temperature change without heating or cooling.

Front

Can a physical change be reversed?

Back

Yes, most physical changes can be reversed.

Front

Can a chemical change be reversed?

Back

Generally, chemical changes are not easily reversible.

Front

What is an example of a reversible physical change?

Back

Freezing and melting of water.