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What is used to represent an element?
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chemical symbol
conserve and produce
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True
phase
About how many atoms of copper when placed side by side would form a line 1 cm long?
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How many significant figures in the measurement 6.80 m?
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Chemistry is the study of composition of matter and the changes that matter undergoes.
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Which answer describes a part of a sample with uniform composition and properties?
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List 2 ways to meet demand for energy.
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A change in the composition of matter _______ occurs during a chemical reaction.
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Anything that has mass and occupies space is matter.
always
3
True
chemical symbol
conserve and produce
100000000
True
phase
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