+An alkene is a hydrocarbon, a molecule built from hydrogen and [Carbon](/wiki/carbon) atoms, defined by the presence of at least one carbon-carbon [Double Bond](/wiki/double_bond). This unsaturation makes them reactive and valuable as building blocks in organic chemistry and for creating [Polymers](/wiki/polymer).
+## See also
+- [Alkane](/wiki/alkane)
+- [Alkyne](/wiki/alkyne)
+- [Hydrocarbon](/wiki/hydrocarbon)
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