Chemistry, asked by s1235rina4310, 3 months ago

when can you say a cemical reaction have taken place​

Answers

Answered by ashauthiras
2

Answer:

We can tell if a chemical reaction has taken place when one or more of the following things happen: There has been a colour change inside the reaction flask. A gas has formed. Usually we know a gas has formed when we can see bubbles.

Explanation:

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