An alkyne is a type of hydrocarbon that contains at least one carbon-carbon triple bond. This triple bond gives alkynes unique chemical properties, making them more reactive than alkenes and alkanes. Alkynes are part of the broader category of unsaturated hydrocarbons, which also includes alkenes. The simplest alkyne is ethyne, commonly known as acetylene, which has the formula C₂H₂. Alkynes can be found in various natural and synthetic compounds, and they are used in applications such as welding and the production of plastics.