25/26 U5: Chemical Reactions

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Physical Property

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A characteristic of a substance that can be observed or measured without changing its identity.

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Chemical Property

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A characteristic of a substance that describes its ability to change into a different substance.

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Chemical Reaction

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A process that involves the rearrangement of the molecular or ionic structure of a substance.

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Products

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Substances that are produced in a chemical reaction.

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Precipitate

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A solid that forms and settles out of a liquid mixture.

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Exothermic

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A process or reaction that releases energy in the form of heat.

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Endothermic

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A process or reaction that absorbs energy in the form of heat.

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Temperature

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A measure of the average kinetic energy of the particles in a system.

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Chemical Change

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A change that results in the formation of new chemical substances.

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Color Change

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An indicator of a chemical change, often observed when a substance changes color.