Question

Whats a sign of a chemical reaction?

Answer 1

Answer:Potential signs that synthetic responses have happened remember a change for color, change in temperature, arrangement of a gas, and development of a hasten

Step-by-step explanation:

Answer 2

There are five signs of a chemical change:

Color Change.

Production of an odor.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid)

Step-by-step explanation:

learned and found it in my journal.