(CHEM-219) Portage Learning
Final Exam by David Gallah,
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Polymer - ANSWERS-large molecule made by repetitive linking of smaller units
(monomers)
Macromolecule - ANSWERS-very large molecule composed of thousands of
covalently bonded atoms (ex: polymer)
1. natural (in nature)
2. synthetic (in lab) - ANSWERS-two ways polymers are made
rubber, carbs: starch & cellulose, proteins, nucleic acids DNA, RNA - ANSWERS-
natural polymers
nylon, teflon, styrofoam, polyethylene, Dacron, - ANSWERS-synthetic polymers
,1. method of formation
2. final composition
3. stereochemical orientation - ANSWERS-3 main ways to differentiate polymers
1. chain-growth
2. step-growth - ANSWERS-Two classifications of Synthetic polymers
addition polymers - ANSWERS-chain growth polymers are also know as:
made by addition of one monomer unit to another in a repetitive pattern -
ANSWERS-How are chain growth polymers made?
chain growth polymerization - ANSWERS-A polymerization involving sequential
addition to monomers that are unsaturated (C=C) or have some other reactive
functional groups (particularly ethylene and derivatives)
1. intervention
2. consumption of all available monomers - ANSWERS-what 2 things stops chain
growth polymerization?
Teflon - ANSWERS-chain-growth
polymer: polytetrafluoroethylene
, monomer: F2C=CF2
nonstick coating, goretex, electrical insulator, chem-resistant coating
Saran - ANSWERS-chain-growth
polymer: polyvinylidenedichloride
monomer: H2C=CCl2
cling-wrap
Polypropylene - ANSWERS-chain-growth
polymer: polypropylene
monomer: H2C=CHCH3
carpet fibers, car parts, toys, packaging, houseware
Orlon, Acrilan, Creslan - ANSWERS-chain-growth
polymer: polyacrylonitrile
monomer: H2C=CH(CN)
textiles/fibers, carpets, upholstery
Polyvinyl Acetate - ANSWERS-chain-growth
polymer: polyvinyl acetate
monomer: H2C=CH(OCOCH3)
elmers glue, silly putty, latex paints