Hydrocarbon

Most of those compounds are hydrocarbons: their molecules contain carbon and hydrogen atoms only. A molecule containing oxygen as well would not be a hydrocarbon.

A hydrocarbon is a compound that contains carbon and hydrogen only. Its name helps reveal its composition: hydro- refers to hydrogen and carbon refers to carbon.

A hydrocarbon is a compound containing carbon and hydrogen only. Some hydrocarbons contain only a few carbon atoms, whereas others have long carbon chains. Hydrocarbons themselves can be placed into different families according to their bonding and structure.

Crude oil is one of our main sources of hydrocarbons. A hydrocarbon is a compound made of carbon and hydrogen only. Crude oil is not one pure compound: it is a mixture of many different hydrocarbons, whose molecules vary in size.