Fact 1: Heating an egg causes a chemical reaction in the egg. Fact 2: Most chemical reactions are exothermic. Given the two facts above, heating an egg causes a _ reaction in the egg?
OPT: (a). symptoms (b). exothermic (c). Evaporation (d). entropic (e). combustion (f). voltage (g). kinetic energy (h). synthesis
(b).