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.

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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, involving a rearrangement of atoms.

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True or False: All physical changes involve a change in chemical composition.

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False

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What is an example of a physical change?

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Examples of physical changes include boiling water, melting ice, and dissolving sugar in water.

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What is an example of a chemical change?

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Examples of chemical changes include rusting of iron, burning wood, and baking a cake.

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What happens during condensation?

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During condensation, a gas turns into a liquid, which is a physical change.

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What is rusting?

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Rusting is a chemical change that occurs when iron reacts with oxygen and moisture in the environment.

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How can dyeing a shirt be classified?

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Dyeing a shirt is classified as a physical change because it alters the appearance without changing the fabric's chemical structure.

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What are the indicators of a chemical change?

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

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What is the difference between a physical property and a chemical property?

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A physical property can be observed without changing the substance's identity, while a chemical property can only be observed during a chemical reaction.