Concept, classification and application of chemical energy

1. Concept: Chemical energy is an energy source that converts chemical energy into usable energy through chemical reaction.

2. Classification: Chemical energy is mainly divided into fossil energy, biomass energy and hydrogen energy.

3. Uses: power production, chemical energy can be used to generate electricity, such as the heat generated by the combustion of coal, oil and natural gas can be used to generate electricity; Transportation, chemical energy is the main energy source of vehicles, such as fuel used by cars, planes and ships.