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Which of the following provides evidence that a chemical change has taken place?

Which of the following provides evidence that a chemical change has taken place?
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4 votes
Which of the following provides evidence that a chemical change has taken place?

asked
User Hugh Guiney
by
8.5k points

2 Answers

6 votes
1,2, and 4 (which I assume was supposed to say 3)
answered
User Igor Belo
by
8.9k points
2 votes
1) Bubbles appear
2) Change of odour
4) A precipitate is formed
5)Change in temperature

answered
User QQping
by
8.5k points
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