Physical & Chemical Properties & Changes

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as color, melting point, or density.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to undergo a specific chemical change, such as reactivity with acid or flammability.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition, such as melting, freezing, or dissolving.

Front

What is a chemical change?

Back

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

Front

Give an example of a physical property.

Back

Color, odor, boiling point, melting point, density.

Front

Give an example of a chemical property.

Back

Reactivity with oxygen, acidity, toxicity.

Front

What happens to the substance during a physical change?

Back

The substance retains its chemical identity, but its physical form may change.

Front

What happens to the substance during a chemical change?

Back

The substance transforms into one or more different substances with new chemical identities.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Physical change, as the sugar can be recovered by evaporating the water.

Front

Is burning wood a physical or chemical change?

Back

Chemical change, as it produces ash, smoke, and new substances.