52_100_polymer_key_F07

52_100_polymer_key_F07 - Polymer Practice Problems 1. Which...

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Polymer Practice Problems 1. Which is not a polymer a. Plastics b. Rubber c. Snow d. Adhesives 2. What is a head-to-head, tail-to-tail polymers declared as a. Flexible b. Rigid c. Loose d. All of the above 3. What do you lose the most energy from a. Gasoline b. Ethanol c. Diesel d. Biodiesel 4. What is the difference between low density polyethylene (LDPE) and high density polyethylene (HDPE) a. HDPE is more opaque and denser b. LDPE is flammable c. HDPE is very rare d. LDPE is more common 5. Which of these is not one of the three basic building blocks for building long chain molecules a. Addition polymerization b. Condensation polymerization c. Division polymerization d. Cross-linked polymers 6. Which type of polymer makes up plastic soda bottles a. PETE b. HDPE c. LDPE d. PP 7. How many polymers are made by addition polymerization a. 2 b. 3 c. 4 d. 5
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8. What % of net energy does biodiesel yield? a. 34 % b. 75 % c. 220 % d. 120 % 9. Which of these is not a polymer a. Fiber b. Rubber c. Protein d. All are polymers 10. How many commodity plastics are there? a. 4 b. 5 c. 6 d. 7 11. Head-to-Head polymer is more a. Flexible b. Rigid c. Slippery d. None of the above 12. What percentage of energy does biodiesel gain/lose a. 34 % b. (34 %) c. 220 % d. (19.5 %) 13. Which of the Big 6 commodity plastics is made via condensation polymerization a. Polyethylene terephthalate b. Polyethylene (HDPE) c. Polyvinyl chloride d. Polyethylene (LDPE) 14. What is a common feature of polyethylene (HDPE) a. Flimsy b. Many branches c. Pack tightly together d. None of the above 15. Which of these is not true about biodiesel? a. Not legal to ship to certain states b. It’s worse for your engine than gasoline c. Has a cleaning effect on engines
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d. Changing of the filters most be done often after switching to biodiesel 16. Which fuel has the highest net energy gain? a. Gasoline b. Diesel c. Ethanol d. Biodiesel 17. Which of these isn’t a polymer a. Plastics b. Fibers c. Grass d. Rubber 18. What component of home-made Biodiesel must be dry? a. Sodium hydroxide b. Isopropyl alcohol c. Distilled water d. Phenolphthalein solution 19. Many monomers covalently linked together creates a a. Monomer b. Polymer c. Molecule d. Adhesive 20. Which of the following is not a basic building block that can represent the units used for synthetic polymers a. Addition polymerization b. Subtraction polymerization
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This homework help was uploaded on 04/03/2008 for the course CHEM 101 taught by Professor Hawrelak during the Fall '07 term at Bloomsburg.

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52_100_polymer_key_F07 - Polymer Practice Problems 1. Which...

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