Linked from
The 11 pages that link to Ethene, each with the reason it gives.
Pi bondBroader topic: Its carbon–carbon double bond contains one pi bond and one sigma bond.
Sigma bondBroader topic: Its double bond contains one sigma bond alongside one pi bond.
Hydration reactionRelated: Direct catalytic hydration converts ethene into ethanol.
ChloroethaneBroader topic: Ethene is the product when chloroethane undergoes dehydrohalogenation.