Chemical & Physical changes

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 boiling.

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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. It involves a chemical reaction and the rearrangement of atoms. Examples include rusting, combustion, and photosynthesis.

Front

Is melting ice a chemical or physical change?

Back

Melting ice is a physical change.

Front

Is boiling water a chemical or physical change?

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Boiling water is a physical change.

Front

What happens during photosynthesis?

Back

During photosynthesis, plants convert carbon dioxide and water into glucose and oxygen using sunlight, which is a chemical change.

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Is baking a cake a chemical or physical change?

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Baking a cake is a chemical change.

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What is an example of a physical change?

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An example of a physical change is breaking glass.

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What is an example of a chemical change?

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An example of a chemical change is the reaction of vinegar and baking soda.

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What are 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 and chemical change?

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The main difference is that physical changes do not alter the chemical composition of a substance, while chemical changes do.