Crude oil and hydrocarbons
A compound that contains hydrogen and carbon only. are A substance formed by the chemical union of two or more elements. that contain hydrogen and carbon The smallest part of an element that can exist. only.
Crude oil
Mixture of hydrocarbons, mainly alkanes, formed over millions of years from the remains of ancient dead marine organisms. is a complex Two or more substances that are not joined together. The substances can be elements, compounds, or both. of hydrocarbons. Carbon atoms can form four A covalent substance is a molecule containing one or more covalent bonds (shared pairs of electrons). bonds, and join together to form chains and rings in hydrocarbon A collection of two or more atoms held together by chemical bonds..
In the ball and stick models below, carbon atoms are black and hydrogen atoms are white.
Crude oil is a A resource that is no longer being made or which is made extremely slowly, such as crude oil and metal ores. because it is made extremely slowly over millions of years, or is no longer being made. However, crude oil is an important source of:
- Material that is used to produce heat, like coal, oil or gas.
- A raw material used to provide reactants for an industrial reaction. for the Substance made from crude oil using chemical reactions. industry
A feedstock is a Basic material that goods are made from such as crops, metals, wood and animal products such as wool and leather. used to provide Substances present at the start of a chemical reaction. for an industrial reaction. A petrochemical is a substance made from crude oil using chemical reactions. For example, ethene is produced from crude oil. It is used as feedstock to make poly(ethene), a A large molecule formed from many identical smaller molecules known as monomers..