Fire

Fire is an observable side effect produced by a change in chemical state. Fire is usually produced as a result of a thermal interaction between oxygen and a fuel source(wood, or gasoline, for example).

The typical steps to create fire are as follows:

• a fuel source is affected by heat until it reaches its ignition temperature
• oxidation occurs; oxygen molecules break down larger molecules into carbon dioxide and water vapour
• this reaction produces a visible, incandescent body of heated gas which sustains the reaction until either the fuel is expended or there is no more oxygen available to the reaction