Answer:
Crude oil is a mixture of hydrocarbons
Explanation:
Crude oil is a fossil fuel composed mainly of hydrocarbons, compounds that contain carbon and hydrogen mainly in their molecular structure. Crude oil can also contain small amounts of sulfur, nitrogen and oxygen. It is formed under conditions of high pressure and heat by the transformation of organic matter.
As mentioned, oil is made up of hydrocarbons. And the number of carbon atoms and the way they are placed inside the molecules of the different compounds gives the oil different physical and chemical properties.
So, crude oil is a mixture of hydrocarbons.
