Physical and Chemical Changes

Front

What defines a chemical change?

Back

A new material is formed.

Front

What is a sign that a chemical reaction has occurred?

Back

Formation of a gas.

Front

Which of the following is a chemical change?

Back

Copper metal turning green.

Front

What happens to green bananas as they ripen?

Back

They undergo a chemical change and turn yellow.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

List one example of a physical change.

Back

Melting ice.

Front

List one example of a chemical change.

Back

Burning wood.

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not change the substance's identity, while chemical changes do.

Front

What is an indicator of a chemical change?

Back

Color change.