9 – 2 ANSWERS TO END-OF-CHAPTER QUESTIONS CHAPTER 9: THE WORLD OF PLASTICS AND POLYMERS Emphasizing Essentials 1. Give two examples each of natural and of synthetic polymers. Answer: Examples of natural polymers: Cotton, silk, natural rubber, cellulose, wool, and DNA. Examples of synthetic polymers: Kevlar, vinyl, nylon, Dacron, polyethylene, polypropylene, and synthetic rubber. 2.
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