This is a simplified explanation. The actual products depend on the specific fuel and the conditions of combustion. For example:
* Incomplete combustion can produce carbon monoxide (CO) and soot.
* Burning fuels containing sulfur can produce sulfur dioxide (SO₂).
* Burning fuels containing nitrogen can produce nitrogen oxides (NOx).
However, carbon dioxide and water are the main byproducts that are typically produced in the combustion of most fuels.