CHEMICAL ENERGY • DICTIONARY ONE.COM • Definition of Chemical energy

... all the so-called real forces in inorganic nature, the mechanical forces and their complements, the so-called potential energies, heat, radiation (light, radiating heat), electricity, magnetism, chemical energy, are different forms of universal motion, which pass, under certain conditions, the one into the other, so that in place of those of the one which disappear, a certain number of the other appear, so that the whole movement of nature is reduced to this perpetual process of ...

— Feuerbach: The roots of the socialist philosophy • Frederick Engels