Chemistry, asked by luckexplosion3954, 11 months ago

Which is the most important question for deciding if a chemical reaction has occurred?

Answers

Answered by keshav2004
0
1. evolution of gas
2. formation of precipitate
3. change in temperature
4. change in colour
Answered by asamanikafalen
0

It is more important to check whether a new substance is formed.Later comes the  color change,change in temp. and evolution of gas.

Hope the answer helps you the best!

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