7th Grade Vocabulary

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Element

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A pure substance made of only one kind of atom, cannot be broken down

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Periodic Table

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A table that organizes the chemical elements

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Compound

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A substance made up of atoms of two or more different elements joined by chemical bonds

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Chemical Symbol

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A one or two letter representation of an element

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Chemical Formula

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A combination of chemical symbols and numbers to represent a substance

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Physical Change

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A change in a substance that alters the form or appearance of matter but does not form any new substances

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Chemical Change

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A change in matter that produces one or more new substances

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Aqueous Solution

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A type of homogenous mixture in which molecules of another substance are uniformly mixed with water

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Solvent

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The part of the solution that dissolves other substances

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Solute

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The part of the solution dissolved by the solvent