This refers to the energy needed to break a chemical bond. It's an endothermic process, meaning it absorbs energy from its surroundings.
Topic 6.7: 6.7 Bond Enthalpies
Breaking Bonds Requires Energy cheat sheet for homework
A reaction that absorbs heat from its surroundings.
The minimum amount of energy required for a chemical reaction to occur.
A lasting attraction between atoms that enables the formation of chemical compounds.