Chemistry, 03.08.2019 12:30, ashelygarcia4321

Obi is trying to determine if a powdery, solid substance is an element or a compound. after recording some observations, he strongly heats a sample of the solid over a burner flame. after fifteen minutes, he turns off the flame and allows the sample to cool. he records his final observations in the data table. which is the best explanation of his results?

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Obi is trying to determine if a powdery, solid substance is an element or a compound. after recordin...