Question

3. A student mixes two solutions, planning to produce carbon dioxide. Which of the following is the BEST evidence that

a chemical reaction is producing gaseous carbon dioxide?

A.color change

B. formation of a solid

C. temperature change

D. formation of bubbles

Answer 1

D

Step-by-step explanation:

Carbon dioxide is a gas. As such, if carbon dioxide is formed from the reaction of the two solutions, it will bubble out of the solution.