Question

identifying indicators of a chemical reaction
write a description of how you know a chemical reaction is occurring.

Explanation:

There are several common indicators. A change in color can show new substances formed. The production of a gas, like bubbles, indicates a chemical change. A precipitate (solid) forming from solutions is also a sign. Temperature changes (exothermic or endothermic) suggest energy - related chemical reactions. Odor changes can be due to the creation of new substances with distinct smells.

Answer:

Common indicators of a chemical reaction include color change, gas production, precipitate formation, temperature change, and odor change.