Physical or Chemical Change

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What is a Physical Change?

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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 change that results in the formation of new chemical substances.

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Example of a Physical Change: Crumpling Paper

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Crumpling paper is a physical change because the paper's shape changes, but it remains paper.

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Example of a Chemical Change: Baking Cookies

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Baking cookies is a chemical change because it creates new substances like carbon dioxide and changes the ingredients.

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What happens during Evaporation?

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Evaporation is a physical change where liquid water turns into vapor without changing its chemical structure.

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What is an Instant Ice Pack?

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An instant ice pack undergoes a chemical change when the chemicals inside mix and absorb heat, making it cold.

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Cutting a Banana is an example of which change?

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Cutting a banana is a physical change because it changes the size and shape but not the chemical composition.

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What are indicators of a Chemical Change?

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

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What are indicators of a Physical Change?

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Indicators include changes in state (solid, liquid, gas), shape, or size without altering the substance's chemical identity.

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Is melting ice a Physical or Chemical Change?

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Melting ice is a physical change because it changes from solid to liquid but remains water.