Question

A copper wire is submerged in a clear liquid in container A. After a while, the contents of the container changed to look like what is in container B, with a white crystal coating on the copper wire and the liquid turning light blue. Which are indicators that a chemical reaction has occurred? Check all that apply.

formation of a flame
formation of a precipitate
formation of a gas
change in odor
change in color

Answer 1

B) formation of a precipitate
E) change in color

Explanation:

just did the assignment on e.d.g.e

Answer 2

B and E is correct

Explanation: