Physical Changes and Chemical Reactions

Front

What is a physical change?

Back

A physical change is a change in the size, shape, or state of matter without altering its chemical composition.

Front

What is a chemical change?

Back

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

Front

Give an example of a physical change.

Back

Chopping wood is an example of a physical change.

Front

Give an example of a chemical change.

Back

Bleaching your hair is an example of a chemical change.

Front

What are chemical properties?

Back

Chemical properties are characteristics that can only be observed when a substance undergoes a chemical change.

Front

What are physical properties?

Back

Physical properties are characteristics that can be observed without changing the substance's chemical identity.

Front

What happens during a chemical reaction?

Back

During a chemical reaction, substances interact to form new substances with different properties.

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change.

Front

Is burning paper a physical or chemical change?

Back

Burning paper is a chemical change.

Front

What is an example of a reversible physical change?

Back

Freezing and melting water is an example of a reversible physical change.