1. Isomers Compounds that have identical chemical formulas but different molecular shapes or structures Iso-greek “equal or identical” Meros greek “part”

2. Organic Compounds Molecules that mainly contain carbon. This contains substances both naturally found and man made (synthetic).

4. Butane C 4 H 10

5. Isobutane C 4 H 10

6. Building Blocks: Carbon In the organic world, carbon rules. The simplest organic compounds have just carbon and hydrogen. Carbon atom chain together nicely to make whatever length you want from two to two million.

7. Building Blocks: Hydrocarbons As the chains get longer, the hydrocarbons go from a gas to a liquid to a more viscous liquid, and finally a solid. The longest chains are polyethylene plastic.

8. Hydrocarbons The simplest organic compounds because they contain only two types of atoms—carbon and hydrogen Methane CH 4 Octane C 8 H 18 Methane, ethane, benzene, octane

9. Build a model of Butane C 4 H 10 Build another model of butane with a different structure

10. Butane Isomer Other Examples?

11. Isomers Isomers have the same chemical structure but different properties because their atoms are arranged differently The greater the number of atoms in a molecule, the more isomers it is likely to have http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJ ml/intro3.htm#strc5

12. Organically synthesized from Coal Tar Vulcanized rubber Synthetic dyes and perfumes Asphalt Rubberized fabric for making waterproof clothing Creosote Viscose Rayon Soapless Detergents Synthetic painkilling drugs plastics