what is petrol

Petrol, also known as gasoline, is a transparent, yellowish, and flammable liquid that is used as a fuel for spark-ignited, internal combustion engines. It is chemically composed of organic compounds derived from the fractional distillation of petroleum, and later is chemically enhanced with gasoline additives. Petroleum, also known as crude oil, is a naturally occurring yellowish-black liquid mixture of mainly hydrocarbons, and is found in geological formations. Petroleum products are fuels made from crude oil and the hydrocarbons contained in natural gas. Gasoline is mainly used in vehicle engines, and most of the finished motor gasoline sold in the United States contains about 10% fuel ethanol by volume. The term petrol is commonly used in British English, while Americans use the term gasoline.