- burn to provide useful energy by reacting with oxygen
- most of energy released as heat and some as light
- contain hydrocarbons
when a fuel is burned and has plenty of air, complete combustion takes place.
.e.g. Methane + oxygen → Carbon dioxide + water + energy
propane + oxygen → carbon dioxide + water + energy
complete combustion takes place because there is enough oxygen for the elements in the fuel to react fully with oxygen. if there is not enough oxygen , incomplete combustion takes place.
e.g.hydrocarbon + oxygen → carbon monoxide + carbon + water
The carbon is released as soot. Carbon monoxide is a poisonous gas, which is one reason why…