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Chapter_25IM - Chapter 25 Synthetic and Natural Organic...

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Chapter 25 Synthetic and Natural Organic Polymers This chapter is a follow-up chapter to Chapter 24, Organic Chemistry. Your students will be introduced to polymers that are naturally occurring in living systems, and to synthetic polymers used in everyday life. Upon completion of this chapter, your students should be able to: 1. Define the term polymer and give several examples of both natural and synthetic polymers. 2. Describe addition reactions to form polymers using the terms monomer, homopolymer, isotactic, atactic, and syndiotactic. 3. Define vulcanization using the term cross-linking. 4. Write the chemical formula for the monomer in each of the following synthetic polymers and give common uses for each polymer a. polyethylene (PE) b. polypropylene (PP) c. poly (vinyl chloride – PVC) d. polyacrylonitrile (PAN) e. polytetrafluoroethylene (PTFE, Teflon) f. poly (methyl methacrylate) (PMMA) g. polystyrene (PS) h. polybutadiene i. styrene-butadiene rubber (SBR) 5. Name and give the chemical structures of five amino acids. 6. Show how the formation of a peptide bond results in the formation of polypeptides (protein molecule). 7. Describe how hydrogen bonding affects the shape of a protein molecule. 8. Define the term denatured protein and describe two ways in which a protein may become denatured.
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9. List Chargaff’s rules for DNA molecules and discuss how these rules are consistent with Watson and Crick’s double-helical structure.
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