Chemical and Physical Changes

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What is a physical property?

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A characteristic of a substance that can be observed or measured without changing its identity, such as color, shape, or malleability.

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What is malleability?

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The ability of a substance to be deformed or shaped under pressure, often without breaking.

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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 but does not alter its chemical composition.

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What is evidence of a physical change?

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Changes in shape, size, or state of matter, such as melting or freezing.

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What is a chemical change?

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A change that results in the formation of new chemical substances, often indicated by color change, gas production, or temperature change.

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What is an example of a physical change?

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An ice cube melting into water.

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What is an example of a chemical change?

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Baking a cake, where new substances are formed.

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What happens during food digestion?

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Food undergoes chemical changes in the stomach, breaking down into simpler substances.

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What is reactivity?

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The tendency of a substance to undergo a chemical reaction, either by itself or with other materials.

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What is flammability?

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The ability of a substance to catch fire and burn in the presence of an ignition source.