Chemical and Physical Properties and Changes

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What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as reactivity with acid or flammability.

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What is a physical property?

Back

A characteristic of a substance that can be observed without changing its chemical identity, such as color, density, or boiling point.

Front

What is reactivity with acid?

Back

A chemical property that describes how a substance interacts with acids, often resulting in a chemical change.

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What is flammability?

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A chemical property that describes how easily a substance can catch fire and burn.

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What happens during a chemical change?

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Bonds between atoms are broken and rearranged to form new substances.

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What is an example of a chemical change?

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Burning sugar, which transforms it into new substances like carbon and water.

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

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A chemical change results in the formation of new substances, while a physical change does not alter the chemical composition of the substance.

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What is an example of a physical change?

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Melting ice, which changes from solid to liquid but remains water.

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What is meant by 'bonds are rearranged' in a chemical change?

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It refers to the process where atoms in reactants are broken apart and reconnected in different ways to form new products.

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What is a reactant?

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A substance that undergoes a chemical change in a reaction.