A chemical reaction is identified by
(i) change in colour
(ii) change in state
(ii) evolution of gas
(iv) change in pressure
Answers
Answered by
1
Explanation:
(i) , (ii) and (iii)
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Answered by
0
Answer:
change in gas
Explanation:
the formation of a gas is a clue to chemical changes. The bubbles of gas that you observed form when an antacid is dropped into water is an example of change. ... The substances produced during chemical changes however cannot easily change back into the original substances.
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