Physical Change VS Chemical Change

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves making or breaking bonds between atoms. Examples include burning, rusting, and cooking.

Front

What are some indicators of a chemical change?

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Indicators of a chemical change include a change in color, the production of gas, the formation of a precipitate, and a change in temperature.

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Is boiling water a physical or chemical change?

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Boiling water is a physical change because it changes from liquid to gas without altering its chemical composition.

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Is burning wood a physical or chemical change?

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Burning wood is a chemical change because it transforms the wood into ash, smoke, and gases, creating new substances.

Front

What happens to the molecules during a physical change?

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During a physical change, the arrangement of molecules may change, but the molecules themselves remain the same.

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What happens to the molecules during a chemical change?

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During a chemical change, the bonds between molecules are broken and new bonds are formed, resulting in the creation of new substances.

Front

Can a physical change be reversed?

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Many physical changes can be reversed, such as freezing and melting, but some may not be easily reversible.

Front

Can a chemical change be reversed?

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Chemical changes are often not easily reversible. For example, burning paper cannot be reversed to get the original paper back.

Front

What is an example of a physical change?

Back

An example of a physical change is ice melting into water.