How can you tell that a chemical change has occurred?
O
A. The products of the change are different from the starting
substances.
O
B. The products of the change are warmer than the starting
materials.
O
C. Two or more substances are mixed together and form a solution.
D. The materials that you are working with evaporate.

A. The products of the change are different from the starting

substances.

Explanation:

Whenever there is a physical change it may just affect the phase change but the properties remains the same. Whenever there is an occurrence of a chemical change, it was indicated by some of these things such as,

b.

the accuracy of the data.