What chemicals are in fuel?

Fuel typically contains hydrocarbons, which are organic compounds made up of hydrogen and carbon atoms. Common types of fuel include gasoline, diesel, and jet fuel, each containing a mixture of various hydrocarbons such as alkanes, cycloalkanes, and aromatic compounds. Additionally, fuels may contain additives to improve performance, such as octane boosters, detergents, and anti-knock agents. Other components can include sulfur and trace elements, which are regulated due to environmental concerns.