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1
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anything that takes up space.
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2
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the atoms that stand on the outer energy level.
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3
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attraction formed between oppositely charged ions in an ionic compound.
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7
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two lements that mixt to become a new one
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9
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homogeneous mixture
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11
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charged particles that has either more or fewer electrons than protons
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12
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when two substances become to gether and the combination proportion are the same.
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13
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neutral particle , composed of quarks inside the nucleus of an atom.
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14
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the particles that are never settle.
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15
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atoms of the same element that have different numbers of neutrons
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