Question

As a chemical reaction occurs, the thermometer in the container records a decrease in temperature. What is true of the reaction?

A The reaction is endothermic because heat was released by the reaction.

B The reaction is exothermic because heat was taken in by the reaction.

C The reaction is endothermic because heat was taken in by the reaction.

D The reaction is exothermic because heat was released by the reaction.

Answer 1

The answer is A !!!!!!!!!!!!

Answer 2

C.

Endothermic reactions result in a decrease of temperature as the reaction absorbs the heat energy. Exothermic (exo meaning outer) reactions release energy as heat or light, which would mean an increase of temperature.