The Nature of Fire: Fire is a chemical reaction known as combustion which occurs when fuel and oxygen are brought together with sufficient heat to cause ignition. A fire cannot start , or continue, if one side of the fuel-oxygen-heat triangle is absent, or if there is an interruption in the chemical chain reaction that sustains burning.Oxygen, heat and fuel are frequently referred to as "fire triangle". Add in the fourth element, the chemical reaction and you actually have a fire. The important thing to remember is: remove one of these elements and you will not have a fire or the fire … [Read more...]