Elements

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Elements

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Pure substance made from one type of atom

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Atomic Number

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Number of protons in an atom. Determines the atom's identity

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Atomic Mass

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Total number of protons and neutrons in an atom

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Matter

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Anything that has mass and takes up space

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Mass

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The amount of matter found in an object

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Atom

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The basic unit of matter.

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Molecule

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Molecules are formed when two or more atoms join together through chemical bonds.