Butene is a type of hydrocarbon that belongs to the alkene family, which means it contains a carbon-carbon double bond. Its chemical formula is C4H8, and it comes in several isomeric forms, including 1-butene, 2-butene, and isobutylene. Butene is commonly used in the production of plastics, synthetic rubber, and other chemicals, making it an important compound in the chemical industry. In everyday life, butene can be found in products like polyethylene, which is used for plastic bags and containers. Additionally, it plays a role in the production of fuel additives that help improve engine performance. Understanding butene and its applications helps us appreciate the chemistry behind many materials we use daily.