Physical and Chemical Properties and 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, shape, mass, and volume.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances, such as flammability and reactivity.

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 or folding.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, indicated by signs such as color change, gas production, or temperature change.

Front

What is an example of a physical change?

Back

Cutting paper or melting ice.

Front

What is an example of a chemical change?

Back

Rusting iron or burning wood.

Front

What happens to the mass of a substance during a physical change?

Back

The mass remains the same because the substance's identity does not change.

Front

What happens to the mass of a substance during a chemical change?

Back

The mass is conserved, but the substance changes into one or more new substances.

Front

What is a clue that a chemical change has occurred?

Back

The formation of a new substance.

Front

What is an example of a clue that a physical change has occurred?

Back

Change in shape or size, such as folding or cutting.