The number of bonds broken is determined by both the mole quantity of the substance and the number of individual bonds, contributing to energy absorption.

Bond energies are always negative, reflecting that energy is released when bonds form.

Calculating overall reaction enthalpy using bond energies involves subtracting the energy released during bond formation from the energy required to break bonds.

Bond energy values are positive, and energy is released (exothermic) when bonds form, resulting in a net negative ΔH if sufficient energy is released.