A chemical reaction that occurs between wood, fuel and oxygen when the fuel used reaches the ignition point is called fire. Ignition point of a substance means the temperature at which the reaction occurs. When wood starts to heat using some external source, the cellulose material that is present in the wood decomposes, which then releases volatile gas known as smoke. The gases produced later are broken into molecules which combine to form oxygen, carbon-dioxide and other gases continue to burn. The chemical reaction thus caused produces new heat which maintains the ignition temperature of the fuel and the oxygen. The heat produced can spread to other fuels as well as gases thus spreading fire. Shape of fuel and amount of energy released during combustion decide the speed and effect of the fuel burnt. It should be understood that fire released from different fuels behave differently.
How does Wood Catch Fire?
