Chemical energy as binding energy between atoms (as a potential curve in the illustration).
Every mixture of source materials that can react to produce end products can be regarded as a potential source of chemical energy.
Microscopically speaking, this chemical energy can be found in the bonds between individual atoms, as illustrated in the potential curve.
Information and ideas:
Chemical energy is a form of energy that is easy to store – whether in the human body or in batteries. An additional example is hydrogen as a chemical energy store for renewable energy sources.