Chem 219 Combination Problem Set Complete Study Guide With Solved Questions

CHEM 219 COMBINATION PROBLEM SET
COMPLETE STUDY GUIDE WITH SOLVED
QUESTIONS

◉ Macromolecule.
Answer: very large molecule composed of thousands of covalently
bonded atoms (ex: polymer)


◉ 1. natural (in nature)
2. synthetic (in lab).
Answer: two ways polymers are made


◉ rubber, carbs: starch & cellulose, proteins, nucleic acids DNA, RNA.
Answer: natural polymers


◉ nylon, teflon, styrofoam, polyethylene, Dacron,.
Answer: synthetic polymers


◉ 1. method of formation
2. final composition
3. stereochemical orientation.

,Answer: 3 main ways to differentiate polymers


◉ 1. chain-growth
2. step-growth.
Answer: Two classifications of Synthetic polymers


◉ addition polymers.
Answer: chain growth polymers are also know as:


◉ made by addition of one monomer unit to another in a repetitive
pattern.
Answer: How are chain growth polymers made?


◉ chain growth polymerization.
Answer: 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.
Answer: what 2 things stops chain growth polymerization?

, ◉ Teflon.
Answer: chain-growth
polymer: polytetrafluoroethylene
monomer: F2C=CF2
nonstick coating, goretex, electrical insulator, chem-resistant coating


◉ Saran.
Answer: chain-growth
polymer: polyvinylidenedichloride
monomer: H2C=CCl2
cling-wrap


◉ Polypropylene.
Answer: chain-growth
polymer: polypropylene
monomer: H2C=CHCH3
carpet fibers, car parts, toys, packaging, houseware


◉ Orlon, Acrilan, Creslan.
Answer: chain-growth
polymer: polyacrylonitrile
monomer: H2C=CH(CN)