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A pure substance is any substance with a definite chemical composition and cannot be broken down through separation techniques.
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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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Where are the noble gases located in the periodic table? a. in the center b. on the left side c. in the upper right corner d. on the far right side
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A pure substance is any substance with a definite chemical composition and cannot be broken down thr...