Naming hydrocarbons

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Across
  1. 6. by a C in the periodic table
  2. 7. the functional group NH2
  3. 9. have no functional group
  4. 11. gas at the beginning of the periodic table
  5. 12. prefix for 10 Carbons
  6. 13. group contains OH
Down
  1. 1. carbon atoms are joined in a straight chain or with branches
  2. 2. the functional group COOH
  3. 3. prefix for 3 Carbons
  4. 4. atoms joined together in a ring structure
  5. 5. some or all of the Carbon atoms are in a benzene ring structure
  6. 8. group contains one triple bond
  7. 10. group contains one double bond