During an experiment, a student observes the formation of a precipitate. why does this indicate that a chemical reaction is likely occurring? 1)a solid forms, and there is a change of color. 2)a gas forms, and there is a change of color. 3)a solid forms, and light is emitted. 4)a gas forms, and light is emitted.
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During an experiment, a student observes the formation of a precipitate. why does this indicate that...
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