Physical and Chemical Changes

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What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

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What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, involving a rearrangement of atoms.

Front

Is melting ice cream a physical or chemical change?

Back

Melting ice cream is a physical change.

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Is burning logs in a campfire a physical or chemical change?

Back

Burning logs in a campfire is a chemical change.

Front

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

Back

The chemical composition of a substance changes during a chemical change, resulting in new substances.

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What is an example of a physical change?

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An example of a physical change is water freezing into ice.

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What is an example of a chemical change?

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An example of a chemical change is rust forming on iron.

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How can you identify a chemical change?

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A chemical change can often be identified by the production of gas, color change, temperature change, or the formation of a precipitate.

Front

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

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A physical change does not alter the chemical composition of a substance, while a chemical change does.

Front

Is cutting paper a physical or chemical change?

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Cutting paper is a physical change.