A chemical combustion reaction occurs when oxygen or another oxygen-rich component available in the atmosphere reacts with a fuel let’s say wood, gasoline, or another type of substance. Of course, wood and gasoline do not catch fire of their own simply because they are exposed to oxygen available in the air. Before the combustion reaction can take place, the fuel must be heated to its ignition temperature.

There are three key components that shall participate in this method, they are

• Severe heat
• Oxygen
• Fuel

Three elements make form the "fire triangle": oxygen, heat, and fuel. We'll have a fire "tetrahedron" if we add the fourth element, the chemical reaction. The most important thing to understand is that if you take away any of these four items, there will be no fire or the fire will get extinguished. The presence of each of the four things for fire to take place.