Crossword clues for the word: ALKENE The word ALKENE has appeared as an answer to at least 11 crossword clues on different crossword puzzles. Crossword clues for ALKENE Showing 1 to 11 of 11 results Clue(s) "C2H4, e.g." "C4H8, e.g." "Ethylene, for one" Compound also called an olefin Compound with a carbon double bond Compound with a Pi-bond Ethylene or propylene Hydrocarbon series Hydrocarbon with one double bond Open chain hydrocarbon Part of a carbon chemical chain