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18 May, 02:03

How can you tell if a chemical reaction occurred?

A. Change in color

B. Created gas

C. Change in Temperature

D. Formed a precipitate

E. All of the above

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Answers (1)
  1. 18 May, 03:43
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    E All of the above.

    Explanation:

    A physical change could chang one or two of those, like color or temp, but chemical would require a gas/and or perticipate to form
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