Question

The production of heat and light is usually an indication of _____.

Select all that apply.
a chemical change
losing mass
breaking bonds
forming bonds

Answer 1

a chemical change, breaking bonds, forming bonds

Answer 2

Answer;

A chemical change, breaking bonds, forming bonds

Step-by-step explanation;

-Signs of chemical change include the release of bubbles, a change of color, production of an odor, release of heat and light, and production of loud sounds. Because chemical changes result in different substances, they often cannot be undone. Some chemical changes can be reversed, but only by other chemical changes.