Basic Chemistry Concepts

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Physical Change

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A change in which no new substances are formed and the material retains its original properties.

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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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Precipitate

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A solid that forms from a solution during a chemical reaction.

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Solvent

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The substance in which the solute dissolves to form a solution.

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Solute

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The substance that is dissolved in a solvent to form a solution.

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Solution

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A homogeneous mixture composed of two or more substances.

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Chemical Property

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A characteristic of a substance that is observed during a chemical reaction.

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Physical Property

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

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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.