In a lab group you combined vinegar and baking soda and observed the results shown in the picture. Choose ALL of the evidence that supports that a chemical change has occurred. Select all that apply. There is no partial credit awarded for this answer.

Question

A. A gas is produced.
B. The color changed
C. Bubbling occurred
D. The baking soda dissolved.
E. There is a change in the composition of the reactants.

Answer 1

To determine if a chemical change has occurred, we can look for specific evidence:

A. A gas is produced. - This is evidence of a chemical change. B. The color changed - This can indicate a chemical change, but in this specific reaction, there is generally no significant color change. C. Bubbling occurred - This is often associated with the release of gas and indicates a chemical change. D. The baking soda dissolved. - This is a physical change, not necessarily indicative of a chemical change. E. There is a change in the composition of the reactants. - This is clear evidence of a chemical change.

Based on this analysis, the options supporting a chemical change are:

A. A gas is produced.
C. Bubbling occurred.
E. There is a change in the composition of the reactants.

So the correct answers are A, C, and E.