Fire is a chemical reaction that involves the rapid oxidation of a combustible material, releasing heat, light, and various gases.
Fire starts when a combustible material is exposed to a heat source, causing it to reach its ignition temperature and initiate the chemical reaction of combustion.
Oxygen is a necessary component of fire because it acts as an oxidizer, providing the necessary molecules for the combustion reaction to occur. Without oxygen, fire cannot sustain itself.
Heat is the energy source that raises the temperature of a combustible material to its ignition point, triggering the chemical reaction of combustion.
The amount of oxygen in the surrounding environment directly affects the rate at which a fire burns. The more oxygen present, the faster and hotter the fire will be. A lack of oxygen can also cause a fire to die out.