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One difference between mixtures and pure substances is that a) mixtures can be physically separated. b) mixtures are made of one type of atom. c) pure substances have no chemical bonds. d) pure substances can be physically separated.
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When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two
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One difference between mixtures and pure substances is that a) mixtures can be physically separated....
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