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16-05-2016
Chemistry

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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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25-05-2016

The right answer for the question that is being asked and shown above is that: "2)A gas forms, and there is a change of color. " During an experiment, a student observes the formation of a precipitate. a chemical reaction is likely occurring because A gas forms, and there is a change of color.

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