Question 16.Which of the following statements describes the differences between endothermic and exothermic chemicalreactions? *
A. Energy is absorbed in endothermic reactions but is released in exothermic
reactions.
B. Energy is conserved in endothermic reactions but is not conserved in exothermic
reactions.
C. Endothermic reactions involve changes in the nucleus of an atom, but exothermic
reactions do not
O involve changes in the nucleus.
D. Endothermic reactions occur when electrons are shared between atoms, but
exothermic reactions occur
when electrons are transferred between atoms.