Physical and Chemical Changes

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What is a physical change?

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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 one or more new substances with different chemical properties.

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Is melting ice a physical or chemical change?

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Melting ice is a physical change.

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Is rusting of iron a physical or chemical change?

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Rusting of iron is a chemical change.

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

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The chemical composition of a substance remains the same during a physical change.

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

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

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Can physical changes be reversed?

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Many physical changes can be reversed, such as freezing and melting.

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Can chemical changes be reversed?

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Chemical changes are often not easily reversible, as they involve the formation of 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 boiling water.

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What is an example of a chemical change?

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An example of a chemical change is burning wood.