Question

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

Answer 1

A change in the contolled veriable. Such as a color change, state of matter change, a reaction like oader, bubbling or tempature change.

Answer 2

Step-by-step 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.