Physical/Chemical Changes and Properties

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What is a physical change?

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A physical change is a change in the appearance of a substance without altering its chemical composition.

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What is a chemical change?

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A chemical change involves a change in the chemical composition of a substance, resulting in the formation of new substances.

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What is flammability?

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Flammability is a chemical property that describes how easily a substance can catch fire.

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What happens to temperature in an endothermic reaction?

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In an endothermic reaction, the temperature decreases as the system absorbs heat.

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What is a chemical property?

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A chemical property is a characteristic of a substance that can only be observed during a chemical reaction.

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What is a physical property?

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A physical property is a characteristic of a substance that can be observed or measured without changing its chemical identity.

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Can a physical change be reversed?

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

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Can a chemical change be reversed?

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Chemical changes are often not reversible, as they result in 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 ice melting into water.

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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.