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Semmy [17]
3 years ago
15

What are 4 signs that chemical reaction had occurred?

Chemistry
2 answers:
miv72 [106K]3 years ago
3 0

Answer:

Color Change.

Production of an odor.

Change of Temperature.

Evolution of a gas (bubbles)

Precipitate (formation of a solid)  

There are 5 so you can choose 4.

xeze [42]3 years ago
3 0
1.Color Change.

2.Production of an odor.

3.Change of Temperature.

4.Evolution of a gas (formation of bubbles)

5.Precipitate (formation of a solid)
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