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What is the only sure evidence for a chemical reaction?
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When the water vapor cools it condenses select a number that represents his process on the
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What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18
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Which characteristics can be used to differentiate star systems? check all that apply.
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The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
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What is the only sure evidence for a chemical reaction?...
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