Flexi Says: Fire uses energy as part of its chemical reaction in which hydrocarbon fuel reacts with oxygen in presence of heat. As the fuel and oxygen react, carbon dioxide gas and water vapor are produced and large amounts of thermal energy are released. The hot gases glow due to their high energy state. The flame you see in fire is made up of glowing gases and some tiny particles. In extremely hot fires, the flame can even contain plasma, a state of energy characterized by glowing ionized particles that are detached from atoms.
