Chemical energy
Chemical Energy is released when bonds form in a chemical reaction, often producing heat as a by-product (exothermic reaction).
There are two important terms to know in the study of chemical energy.
Batteries, biomass, petroleum, natural gas, and coal are examples of stored chemical energy. Usually, once chemical energy is released from a substance, that substance is transformed into an entirely new substance.
For example, when an explosive goes off, chemical energy stored in it is transferred to the surroundings as thermal energy, sound energy and kinetic energy.
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