Petroleum products are used widely in our everyday lives. They are used to power automobiles produce containers and to keep us warm. Petroleum, or crude oil is liquid composed of various organic chemicals. It is found in large quantities below the surface of Earth and is used as a fuel and as a raw material in the chemical industry. The word petroleum comes from the two Latin words "petro" and "leum" "petro" meaning rock and "leum" meaning oil. The chemical composition of all petroleum is principally hydrocarbons which are a family of organic compounds, composed entirely of carbon and hydrogen. Petroleum is formed under Earth's surface by the decomposition of organisms.
The remains of tiny organisms that live in the sea are trapped with the sands and silts that settle to the bottom in sea basins. These deposits become the source rocks for the generation of crude oil. The process began many millions of years ago with the development of abundant life, and it continues to......
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