Review Physical and CHemical Properties and Changes

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What is a physical change?

Back

A physical change is a change in the amount, size, or shape of matter without altering its chemical composition.

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What is a chemical change?

Back

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

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What is an example of a physical change?

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Examples include melting ice, dissolving sugar in water, and breaking a glass.

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What is an example of a chemical change?

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

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What happens to the molecules during a physical change?

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The molecules may rearrange or change their state (solid, liquid, gas) but their chemical structure remains the same.

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What happens to the molecules during a chemical change?

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The molecules break apart and recombine to form new substances with different properties.

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What is condensation?

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Condensation is the process where water vapor cools and changes back into liquid water, a physical change.

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What is boiling?

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Boiling is the process of heating a liquid until it turns into vapor, which is a physical change.

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What is an example of a physical change that results in a color change?

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A red candy dissolving in water and turning it pink is an example of a physical change that results in a color change.

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What are some processes that can cause physical changes?

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Cutting, bending, dissolving, freezing, and boiling are all processes that can cause physical changes.