12 U Organic Chemistry Worksheet # 5 – Polymers
12 U Organic Chemistry Worksheet # 5 – Polymers
1. Define polymer and list some common uses of polymers.
2. Use a Venn diagram to compare and contrast addition and condensation polymerization reactions.
3. Identify features you would look for to help classify a polymer as an addition polymer to condensation polymer.
4. Suggest properties that might make polymers useful additions to paint, auto or wood finishes.
5. Polyacrylamide, used as a gel in electrophoresis, contains crosslinks between polymer chains. How might cross-linking change the polymer’s properties compared to single-chain polyacrylamide?
6. Describe the intramolecular and intermolecular forces of attraction between long addition polymer chains.
7. Explain why addition polymers are more chemically stable than their monomers.
8. Draw and name the addition polymers that form from the following monomers:
a) n [pic] → b) n [pic] → c) n [pic] → d) n [pic] →
9. Draw the polymer that forms from alternating repeating units of chlorethene and 1,1-dichloroethene. It is called “Saran” – used in food wrap.
10. Draw the condensation polymers that form from the following monomers:
a) n[pic] + n[pic] → b) n[pic] + n[pic] →
c) n[pic] + n[pic] → d) n[pic] + n[pic] →
11. Which is more soluble in an organic solvent, such as acetone: a polymer whose monomer contains a methyl group or one that contains a carbonyl group? Explain.
Readings
• “The Invention of Nylon” – answer questions # 1-4.
• “Polymers and Industry” and “Polymer Production: Risks and Solutions” – answer questions # 19-24.
• “Natural Polymers” – answer questions # 1-7.
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