Question

During a lab activity, students prepared two solutions separately at the same temperature. Later they mixed the solutions and the temperature dropped. Why?
A:there was no energy input during the chemical reaction
B:energy was absorbed during the chemical reaction
C:energy was released during the chemical reaction

Answer 1

I think it's B because the individual properties had their own temperature and when the were mixed they observed ones temperature and cold down by sharing the same properties

Answer 2

Reactions usually only happen spontaneously if they are exothermic.Therefore the best answer is :

C:energy was released during the chemical reaction