Truefalse 1 the following arrangement indicates a

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TRUE/FALSE 1. The following arrangement indicates a crosslinked polymer. ANS: T BIAF 7e Test Bank
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2. 2,4-Toluene diisocyanate is a very important chemical in the synthesis of polyurethanes used in foam pillows and freezer insulation and has the following structure. ANS: T 3. The following is an example of a polyurethane. ANS: F 4. A polymer has the repeating unit drawn below: The two monomers used to make the polymer are shown below. ANS: F 5. Consider the following two structures. The following represents the repeating unit of the polymer formed by these two substances. ANS: T BIAF 7e Test Bank
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6. Ziegler-Natta catalysts, used to prepare linear polymer molecules, consist of: organoaluminum compounds and transition metal salts. ANS: T 7. A good initiator for a free radical addition polymerization is acetyl chloride. ANS: F 8. Thermosetting polymers continue to crosslink on heating followed by cooling to irreversibly produce an extremely hard material that cannot be remelted. ANS: T 9. Consider the polymeric structure below for amylose (a type of starch). The structure for the monomer is given below. ANS: T 10. High degrees of crystallinity are associated with polymers with weak intermolecular forces. ANS: F COMPLETION 1. The name of the polymer formed by the molecule shown below is _________________. ANS: polypropylene BIAF 7e Test Bank
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