1. Atom or group of atoms that gives a molecule “personality.” (Molecules with that group behave alike.) Functional Group

2. R-X X = F, Cl, Br, I Halocarbon

3. R-OH Alcohol

4. R-O-R’ R, R’ = hydrocarbons Ether

5. R-CHO Aldehyde

6. R-C-R’ Ketone = O

7. R-COOH Carboxylic Acid

8. R  C  O  R’ Ester = O

9. R-NH 2 Amine

10. R  C  NH 2 Amide = O

11. R  CH  C  OH Amino Acid = O NH 2 

12. C 4 H 9 OH Alcohol

13. CH 3 COOH Organic Acid

14. C2H5OC2H5C2H5OC2H5 Ether

15. CH 3 NH 2 Amine

16. CH 3 COOC 2 H 5 Ester

17. C 2 H 5 Br Halocarbon

18. C 2 H 5 OH Alcohol

19. CH 3 CH 2 CHO Aldehyde

20. C 4 H 9 CONH 2 Amide

21. C 2 H 5 OCH 3 Ether

22. CH 3 COOC 3 H 7 Ester

23. CH 2 (NH 2 )COOH Amino Acid

24. C 2 H 5 COCH 3 Ketone

25. C 2 H 5 COOH Organic Acid

26. C 2 H 5 NH 2 Amine

27. CCl 4 Halocarbon

28. HCOH Aldehyde

29. CH 3 COCH 3 Ketone

30. C 2 H 5 CONH 2 Amide