Question

You hear two substances, A and B. Both substances change color. When cooled, both substances return to their original colors. What most likely happened in this situation?

1. A chemical change occurred in substance A and a physical change occurred in substance B

2. A physical change occurred in both substances

3. A chemical change occurred in both substances.

4. A physical change occurred in substance A, and a chemical change occurs in substance B

Answer 1

Step-by-step explanation:

OPTION 4 -It is most likely that a physical change occurred in both substances.

When a substance changes color upon heating or cooling, but returns to its original color upon cooling or heating, it is an indication that a physical change has occurred. Physical changes are changes in a substance's physical properties, such as color, density, and phase (solid, liquid, gas), and do not alter the chemical composition of the substance.