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Oksi-84 [34.3K]
3 years ago
11

What are you looking for in your observations when you are looking for evidence of a reaction?

Biology
2 answers:
baherus [9]3 years ago
8 0

Explanation:

As we are not able see the exchange of atoms that takes place during a chemical reaction, we look for physical changes that takes place at that time. A change in color and temperature, formation of a precipitate and emission of light and gas are some of the visible changes that assures that a reaction has taken place.

Pani-rosa [81]3 years ago
7 0
A change in the contolled veriable. Such as a color change, state of matter change, a reaction like oader, bubbling or tempature change.
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