Question

27 multiple choice 2 points energy is ____ when bonds are formed and is __ when bonds are broken; therefore, bond dissociation energies are always ____. consumed; released; isothermic released; consumed; endothermic consumed; released; endothermic released; consumed; exothermic consumed; released; exothermic previous

Explanation:

When chemical bonds form, energy is released (exothermic - like heat out). When bonds break, energy is consumed (endothermic - heat in). Bond dissociation energy, the energy to break a bond, is endothermic.

Answer:

B. released; consumed; endothermic