Question

what are some indicators that a chemical reaction is occurring? check all that apply. the formation of bubbles a change in size a change in color the formation of a liquid the formation of a precipitate

Explanation:

Bubbles can indicate gas production in a reaction. A color - change may signal the formation of new substances. Precipitate formation shows an insoluble product has formed. A change in size is usually a physical change, and formation of a liquid alone isn't always a sign of a chemical reaction (e.g., melting is physical).

Answer:

• the formation of bubbles
• a change in color
• the formation of a precipitate