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Worksheet: Alkenes and alkynes

Answer key

Name: Date:

Part A: draw the structure

Draw the skeletal structure of each compound. Hydrogens on carbon need not be drawn.

  1. but-1-ene
  2. but-2-yne
  3. buta-1,3-diene
  4. 2-methylbuta-1,3-diene
  5. 4-methylpent-2-yne
  6. 1-methylcyclohex-1-ene
  7. 3,3-dimethylbut-1-yne
  8. 3,3-dimethylcyclohex-1-ene
  9. 2-methylhex-1-en-3-yne

Part B: name the structure

Write the IUPAC name of each compound.

  1. Structure 10IUPAC name:
  2. Structure 11IUPAC name:
  3. Structure 12IUPAC name:
  4. Structure 13IUPAC name:
  5. Structure 14IUPAC name:
  6. Structure 15IUPAC name:
  7. Structure 16IUPAC name:
  8. Structure 17IUPAC name:
  9. Structure 18IUPAC name:

Practice these compounds online, with instant feedback: https://orgodraw.com/practice/?topic=alkenes-alkynes