Chemistry
Chemistry, 31.01.2020 16:03, 21tywmeb

Which of these is an indication that a chemical reaction occurred

a. formation of gas
b. boiling of a substance
c. melting of a substance
d. freezing of a substance

answer
Answers: 2

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Do you know the correct answer?
Which of these is an indication that a chemical reaction occurred

a. formation of gas

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