What are the signs of a chemical reaction? A. Color change and gas released

B. Color, Gas, Explosion, Smoke,
Precipitate

C. Color, Gas, Light, Temperature, Precipitate

C

Explanation:

Because i just had to do this on my assignment and got 100

hey , its option c because in chemical reaction colour + evolution of gas takes place + temp. + precipitation. but also light can come in the case of chemical reaction.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

you gotta add the following molecules so we can give u an answer

explanation: