Alkene - unsaturated hydrocarbon with double bonds, Isomer - same molecular formula different structural formula, Distillation - Separating one hydrocarbon from another by boiling point, Alkane - Fully saturated hydrocarbon, Crude Oil - The source of most hydrocarbons, Cracking - Converting a long chain hydrocarbon into shorter ones, Polymer - Made when lots of small alkenes join together,

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