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1
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An object with not a negitive or positive charge
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2
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Unit of matter with more or fewer electrons or protons
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3
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Subatomic particle with a negitive charge
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4
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Rearrangement of electrons in two atoms
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5
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Material that becomes evident during a chemical reaction
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8
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The basic unit of a chemical reaction
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9
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What is formed when two or more chemical elements are bonded together
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11
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Composed of atoms with the same atomic mass
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14
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When atoms arrange themselves to form a new substance
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15
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Substance that takes part in & undergoes change during a reaction
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18
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Protons have a _______ charge
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20
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Material system made up of two or more different substances which are not combined chemically
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