The process of storing energy in chemical bonds is called "chemical energy storage." This occurs during chemical reactions, where energy is absorbed or released as molecules are formed or broken down. For example, during photosynthesis in plants, sunlight energy is captured and stored in the form of glucose, a type of carbohydrate. In the human body, the metabolism of food converts these chemical bonds into usable energy through cellular respiration. Chemical energy storage is critical for biological functions and is foundational to energy storage technologies, such as batteries, which convert stored chemical energy into electrical energy for a variety of uses.