1. Drill: Name the Following C C C C-C-C-C-C-C-C C-C

2. Stereo- chemistry

3. Stereochemistry Any chemistry which involves orientation in space

4. Use Models

5. Symmetry Referring to anything that can be divided on some plane into identical parts

6. Symmetry In molecules, planes of symmetry can be determined along any bond axis

7. Symmetric Compounds Compounds with at least one plane of symmetry

8. Symmetric Compounds The mirror images of symmetric compounds are identical

9. Asymmetric Compounds Compounds with no plane of symmetry

10. Asymmetric Compounds The mirror images of asymmetric compounds are not identical. They are optical isomers.

11. Optical Isomers Mirror images of asymmetric compounds are optical isomers or stereoisomers

12. Stereoisomerism of C A carbon center must be bound to 4 different things to be asymmetric

13. Stereoisomerism of C Any carbon center bound to 3 or less things has at least one plane of symmetry

14. C C C C-C-C-C-C-C-C C-C Find an assymetric carbon center:

15. C C C C-C-C-C-C-C-C C-C

16. Stereoisomerism of C Use modeling

17. Stereoisomerism of Carbon Chains The constituents on two adjacent carbons spend more time in the staggered position

18. Stereoisomerism of Carbon Chains Use modeling to show aligned & staggered positions

19. Polarity of Hydrocarbons Hydrocarbons are non-polar

20. Perfectly Symmetrical Compounds All perfectly symmetrical compounds are non-polar

21. Less than perfectly Symmetrical Compounds Compounds with any plane of asymmetry can be polar if the bonds are polar

22. Diffusion Movement down an energy gradient

23. Thermochemistry Compounds will eventually move to the lowest possible energy state (the most stable state)

24. Thermochemistry of Organic Compounds Stability is sometimes determined by how the compound interferes with its surroundings

25. Thermochemistry of Organic Compounds To increase stability, organic compounds tend to curl up

26. Thermochemistry of Organic Compounds Ring structures are more stable than their corresponding straight chain structures

27. Drill: Name:

28. Name & draw an optical isomer of: H 3 C-CH 2 H 3 C-C-CH 2 -CH 2 -CH 3 H

29. Draw & Name at least 5 isomers of C 6 H 14