Topic 1: Matter and Solutions

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element

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A pure substance that cannot be broken down into simpler substances.

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chemical symbol

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Letter(s) used to represent each element.

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compound

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A substance consisting of molecules that contain more than one kind of atom.

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chemical formula

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A group of letters and numbers that represents a molecule of a compound.

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periodic table

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A table that organizes the chemical elements.

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physical change

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A change 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 that results in the formation of one or more new substances.

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aqueous solution

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

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solvent

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The part of a solution that dissolves other substances.

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solute

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The part of a solution dissolved by the solvent.