Chemistry, 19.10.2019 18:30 jumpman2344
Your teacher gives you a black powder. when you dissolve the powder in water, you see red particles that float to the top, black particles that sink to the bottom, and a green liquid. was the black powder a pure substance, mixture, element, or compound? compound element pure substance mixture i think it is a
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Your teacher gives you a black powder. when you dissolve the powder in water, you see red particles...
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