Carbon and its Compounds — Science STD 10 — Question

Examples of fuel include wood, coal, natural gas, and oil.Combustion is where you burn a fuel in the presence of an oxidant like oxygen. Heat is produced, because the bonds in thefuel store more energy than the bonds in the water and carbon dioxide that are the products of combustion. As a result, the bonds present in the molecules of fuel break, releasing energy. Sometimes, the energy released falls in the visible range of the electromagnetic spectrum (which means the energy released is visible to human eye) which we call as light. Sometimes the energy released falls under infrared region, which we commonly call as heat. Basically, the compounds generate heat or light or both due to the release of energy from the breaking of molecular bonds.