Which of the following is an indicator of a chemical reaction? A. two different compounds mixing and remaining seperate.

B. changing states of matter (solid to liquid).

C. decreasing in size.

D. increasing in tempurature​

option . D

Increase in temperature

is an indicator of a chemical reaction

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answer is D

Explanation:

some signs of a chemical change are a change in colour and the formation of bubbles.

the five conditions of chemical change: colour change, formation of precipitate, formation of a gas ,odor change, temperature change.

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for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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