IUPAC

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Across
  1. 3. simplest alkane, CH₄ (5 letters)
  2. 5. The functional group in carboxylic acids (-COOH) (9 letters)
  3. 6. an alkane with two carbon atoms, C₂H₆ (6 letters)
  4. 7. an alkane with three carbon atoms, C₃H₈ (7 letters)
Down
  1. 1. the IUPAC name for tertbutane's isomer, C₄H₁₀ (10 letters, two)
  2. 2. The name of a one-carbon alkyl substituent
  3. 4. The longest straight-chain alkane with four carbons (6 letters)