1-Hexadecene, also known as 1-cetene, is a long-chain hydrocarbon and an alkene with the molecular formula CH2=CH(CH2)13CH3. It is one of many isomers of hexadecene. Classified as an alpha-olefin, 1-hexadecene is a colorless liquid.
Ethylene (IUPAC name: ethene) is a hydrocarbon which has the formula C2H4 or H2C=CH2. It is a colorless flammable gas with a faint "sweet and musky" odor when pure. It is the simplest alkene (a hydrocarbon with carbon-carbon double bonds).