The following was NOT one of the observations from the labs that indicated a chemical reaction was occurring?

Question

a
bubbles
b
gas forming
c
color change
d
All of the above was observed signs of a chemical reaction

Answer 1

The correct answer is: d. All of the above was observed signs of a chemical reaction.

All the given observations (bubbles, gas forming, and color change) are indeed signs that a chemical reaction may be occurring. Thus, d is not an option that reflects a lack of observation of a chemical reaction; rather, it indicates that all were observed.