Benchmark Practice - Physical Chemical Properties Changes

Front

What is a physical change?

Back

A physical change is a change in which some physical properties of a substance change, but the substance retains its identity.

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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, often accompanied by a change in properties.

Front

Give an example of a physical change.

Back

An example of a physical change is when a piece of paper is ripped into smaller pieces.

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Give an example of a chemical change.

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An example of a chemical change is burning wood, which produces ash and smoke.

Front

What evidence indicates a chemical change has occurred?

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Evidence of a chemical change includes the production of gas, a change in color, the formation of a precipitate, or a change in temperature.

Front

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

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The identity of the substance remains the same during a physical change.

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What is a precipitate?

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A precipitate is a solid that forms and separates from a liquid mixture during a chemical reaction.

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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's identity, while chemical properties can only be observed during a chemical change.

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What is an example of a physical property?

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An example of a physical property is color, density, or melting point.

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What is an example of a chemical property?

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An example of a chemical property is flammability or reactivity with acid.