Petroleum, or crude oil, is a smelly, yellow-to-black liquid and is usually found in underground areas called reservoirs.
Oil was formed from the remains of animals and plants (diatoms) that lived millions of years ago in a marine (water) environment before the dinosaurs.
Petroleum is a naturally occurring, yellow-to-black liquid found in geological
formations ..... Crude oil varies greatly in appearance depending on its
composition. It is usually black or dark brown...
Crude oil is a naturally occurring, unrefined petroleum product composed of
hydrocarbon deposits and other organic materials.
Crude oil is pumped from the ground in the Middle East (e.g., Saudi Arabian Arab
Light), West Africa (e.g., Nigerian Bonny Light), the Americas, and Asia ...
Jul 24, 2009 ... Learn about crude oil, it's makeup, Oil production, and how we use it (beyond the
standard fuels, such as gasoline.) Crude Oil is essential to our ...
Petroleum products are produced from the processing of crude oil and other
liquids at petroleum refineries, from the extraction of liquid hydrocarbons at
Definition of crude oil: Mixture of naturally occurring hydrocarbons that is refined
into diesel, gasoline, heating oil, jet fuel, kerosene, and literally thousands of ...
Nov 2, 2016 ... Crude oil is used to make fuel and other petroleum products. From the U.S.
National Library of Medicine. [ ]
Oil, gas and gas condensate are among the most important energy sources in the
world. One thing we know for sure is that we need oil - currently around 90 ...
A secondary school revision resource for OCR GCSE Science about carbon
chemistry and making crude oil useful.