Hydrocarbons which contain only single bonds are called alkanes. They are called saturated hydrocarbons because there is a hydrogen in every possible location. This gives them a general formula CnH2n+2.
Past this number of carbons, the -ane suffix is retained and the number prefixes penta-, hexa-, hept-, oct-, non-, dec-, etc are used. Alkyl groups are used as substituents, and alkane derivatives have many applications.