Review Physical and CHemical Properties and 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. Examples include changes in size, shape, or state of matter.

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What is a chemical change?

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A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and the breaking and forming of bonds. Examples include burning, rusting, and digestion.

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Identify an example of a physical change.

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Honey dissolving in tea is an example of a physical change.

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Identify an example of a chemical change.

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Wood burning is an example of a chemical change.

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

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The properties of a substance may change in terms of size, shape, or state, but the chemical identity remains the same.

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

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The properties of a substance change completely, resulting in the formation of new substances with different chemical identities.

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Can a physical change result in a color change?

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Yes, a physical change can sometimes result in a color change, such as when a red candy dissolves in water and turns it pink.

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What is an example of a physical change that involves a change in state?

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Ice melting is an example of a physical change that involves a change in state from solid to liquid.

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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 results in the formation of new substances.

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What is an example of a chemical change that occurs in everyday life?

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Rusting of metal is an example of a chemical change that occurs in everyday life.