1.3 Chemical/Physical Changes and Properties

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What is a Chemical Change?

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A change in matter that forms one or more new substances with new chemical properties.

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What is a Physical Change?

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A change that does not alter the chemical composition of a substance, such as changes in shape, state, or temperature.

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What indicates a Physical Change?

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Change in shape.

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What is a Chemical Property?

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A characteristic of a substance that can only be observed during a chemical reaction, such as flammability.

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What is an example of a Physical Change?

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Melting of ice.

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What is an example of a Chemical Change?

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Iron rusting.

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What happens during a Physical Change?

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The substance may change its form or state, but its chemical identity remains the same.

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What happens during a Chemical Change?

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The original substances are transformed into one or more new substances with different properties.

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What is the difference between Physical and Chemical Properties?

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Physical properties can be observed without changing the substance, while chemical properties can only be observed during a chemical reaction.

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What is an example of a process that causes a Physical Change?

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Boiling water.