3.  Poly = Many  A large, complex molecule built from smaller molecules joined together in repeating patterns

4.  Synthetic ◦ Polyester ◦ Nylon ◦ Plastics  Natural ◦ Starches ◦ Meat proteins ◦ Egg proteins

5.  Mostly carbon compounds  2 properties allow this ◦ Can form 4 bonds (gains, loses, share 4 electrons) ◦ Make a variety of structures

6.  Straight chain  Branched chain  Ring

7.  Most common is H  O  N  P  S  Halogens

8.  Mono = 1  These are the smaller molecules that repeat to build the polymers  Polymers form when chemical bonds link large numbers of monomers in a repeating pattern

10.  Cellulose: cell walls of fruits and veggies.  Starches: Sugar molecules  Silk: Silk worm cocoons  Wool: Sheep’s fur  Figure Nails and muscles: proteins ◦ Amino acids

11.  Raw mats = coal or oil  Plastics  Carpet  Clothing  Glue  Gum (do not swallow)  Pg 121

12.  Synthetic = cheaper, lasts longer  Natural = environmentally friendly

13.  Combine 2 or more substances in a new material with different properties  Many include 1 or more polymers

14.  Fiberglass  Flexible but strong! ◦ Fishing polls ◦ Tennis rackets

15.  Plastics can last forever but some are only used for a day  Recycling  Money  Island of plastic