when you break a bond, does it take energy or release energy?
<answer> It take energy. <context> If you want to force bonds to break, however, you must add energy from an outside source. If you add it as heat, the temperature will rise, but some of the heat energy will be absorbed as the bonds break and so the temperature will not rise as much as if no bonds had broken. The amount of heat we must add to a system to break bonds also depends on the strength of the bonds.