So once again, to sum this information up, anytime we form a bond, energy is released. Anytime we want to break a bond, energy needs to be inputted into our system, into the molecule. Now, what is bond association energy? Well, bond association energy is the amount of energy required to break a bond. In other words, if we want to break this bond, we need to input some amount of energy. And this is known as the bond association energy.