Unsaturated hydrocarbon:
An unsaturated hydrocarbon is a hydrocarbon containing at least one double or triple bond. They are chemically more reactive. Example: Alkenes - These unsaturated hydrocarbons are molecules that contain at least one carbon-to-carbon double bond. With the chemical formula consisting of CnH2n.
The simplest alkene is ethylene. Alkynes - These unsaturated hydrocarbons are molecules that contain at least one carbon-to-carbon triple bond. Acetylenes are common examples of alkynes.