In this lesson you can learn about Combustion Facts. Combustion simply means burning. It is a process which needs several factors to take place.
Combustion or burning is a chemical process in which fuel reacts with an oxidant (A substance that oxidises another substance) to produce heat. The heat released can produce light in the form of flame.
The wax on and around the wick melts. Some of the wax boils and gives off a gas which catches fire. This produces heat which melts more wax. This boils and gives off more gas which continues burning. In a lighted candle, it is burning gas which produces the flame.
Chemicals called oxides
The fire triangle is a diagram that shows the three things needed for a fire to start and keep going.
Burning substances need to be heated to a certain temperature before they will burn. This temperature is the certain temperature of a burning substance.
A fuel is a material that is used to produce heat and other forms of energy.
E.g. – Wood and Charcoal
Wood is burnt in a special oven called kiln. That oven gets less oxygen than usual. Therefore the wood does not burn completely to leave ash. Instead a black substance is made called, ‘charcoal’.