Chemical and Physical Changes

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance, such as melting or freezing.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as burning or rusting.

Front

What is malleability?

Back

A physical property that describes a material's ability to be shaped or deformed without breaking.

Front

What is flammability?

Back

A chemical property that indicates how easily a substance can ignite and burn.

Front

Give an example of a physical change.

Back

An ice cube melting.

Front

Give an example of a chemical change.

Back

Iron rusting.

Front

What is the difference between a physical property and a chemical property?

Back

Physical properties can be observed without changing the substance, while chemical properties can only be observed during a chemical reaction.

Front

What happens during a chemical reaction?

Back

Atoms rearrange to form new substances.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is an example of a reversible physical change?

Back

Freezing and melting of water.