Question

PLZ HURRY IT'S URGENT!!

Which identifies that a chemical reaction has occurred?

A.
New substances are produced.

B.
The color has changed.

C.
Bubbles have formed.

D.
Temperature has changed.

Answer 1

it should be A.

Step-by-step explanation:

Answer 2

Chemical changes are not usually physical so you can’t see them I guess so I would put D