Test Bank General Chemistry, 10th edition 1
Chapter 24 – Polymer Materials: Synthetic and Biological
1. Consider the polymer drawn below:
What monomer(s) could produce the above polymer?
A)
CH2 = CH2 and CH3CH = CH2
B)
CH3CH = CHCH3
C)
CH2 = C(CH3)2
D)
CO and CH2 = CH2
E)
none of these
2. Which of the following statements about polymers is/are correct?
1.
Polypropylene and polyethylene are high molecular weight alkenes.
2.
Addition polymers must be made from monomers which have at least one
double or triple bond somewhere in the molecule.
3.
Condensation polymerization reactions produce small molecules, like H2O, as
byproducts to the polymer formation.
A)
1 only
B)
2 only
C)
3 only
D)
2 and 3
E)
1, 2, and 3
3. Which of the following statements about polymers is/are correct?
1.
Condensation polymers are always formed from a single monomer.
2.
Addition polymerization sometimes requires an initiator, such as an organic
peroxide.
3.
Polyesters are formed from amines and carboxylic acid monomers which have
two or more amine and carboxylic acid functional groups per monomer.
A)
1 only
B)
2 only
C)
3 only
D)
2 and 3
E)
1, 2, and 3
4. The structure of the polymer used in a freezer wrap can mainly be described as follows:
[CCl2 —CH2 —CCl2 —CH2 —CCl2 —CH2 —CCl2 —CH2]n
Which monomer could produce this polymer?
A)
Cl2C – CH2
B)
CCl2
C)
CCl2 = CH2
D)
Cl2C = CH2 = CCl2
E)
none of these
5. Which of the following is not an addition polymer?
A)
poly(vinyl chloride)
B)
polyethylene
C)
polystyrene
D)
polypropylene
E)
polyester
6. Which of the following combinations can produce a condensation polymer? (R and R’ are
alkyl groups)
A)
R−OH + HOOC−R’−COOH
B)
HO−R−OH + R’−COOH
C)
H2N−R−NH2 + HOOC−R’−COOH
D)
A and C
E)
A, B, and C
Test Bank General Chemistry, 10th edition 3
7. The polymer
is formed by addition of which of the following?
A)
CH3CH2CH3
B)
CH2 = CH – CH3
C)
CH3CH = C(CH3)2
D)
H2C = CH – CH – CH2
E)
CH3 – CH = CH – CH3
8. For a free-radical addition polymerization, which of the following statements is true?
A)
Upon polymerization, -bonds are transformed into -bonds.
B)
The final polymer is a free radical.
C)
A copolymer is formed between the monomer and the initiator.
D)
Upon polymerization, -bonds are transformed into -bonds.
E)
The final polymer must be electrically conducting.
9. What of the following polymers could be produced by the free-radical addition of 1,1-
difluoroethylene, F2C=CH2?
A)
B)
C)
Test Bank General Chemistry, 10th edition 4
D)
E)
10. For the addition polymer poly(vinyl chloride) shown below, what is the chemical structure
of the monomer?
A)
D)
B)
E)
C)
11. Which of the following statements does not describe natural rubber?
A)
It is a copolymer.
B)
Isoprene is the monomer.
C)
It may be sticky unless it has been vulcanized.
D)
It is a homopolymer.
E)
It can be made from the sap of a certain tree.
12. The polymer formed from ethylene glycol (HOCH2CH2OH) and1,3-propanedicarboxylic
acid (HOOCCH2COOH) is what type of polymer?
I.
addition polymer
II.
condensation polymer
III.
homopolymer
IV.
copolymer
A)
II and IV
B)
II and III
C)
I and IV
D)
I and III
E)
None of these; it’s a polyamide.
Test Bank General Chemistry, 10th edition 6
13. Elimination of a small molecule such as water is involved in formation of which type of
polymer?
A)
condensation polymer
B)
addition polymer
C)
free-radical polymer
D)
homopolymer
E)
copolymer
14. Which of the following pairs of substances could form a polyester?
A)
H2NCH2COOH + H2NCH2CH2COOH
B)
HO(CH2)4COOH + HOCH2CH=CHCH3
C)
HOCH2CH2OH + HOOCCOOH
D)
H2C=CHCH3 + HOCH2CH2COOH
E)
H2C=CHCN + H2C=CHCH3
15. What is the polymer formed by the condensation of ethylene glycol, HOCH2CH2OH, with
1,3-propanedicarboxylic acid, HOOCCH2COOH?
A)
B)
C)
D)
E)
16. What is the polymer formed by the condensation of 1,3-propanedicarboxylic acid,
HOOCCH2COOH, with 1,2-diaminoethane, NH2CH2CH2NH2?
A)
B)
C)
D)
E)
17. What is the type of polymer formed when 1,4-butanecarboxylic acid,
HOOCCH2CH2COOH, reacts with 1,4-diaminobutane, H2NCH2CH2CH2CH2NH2?
A)
polyacetylene
B)
polyolefin
C)
polystyrene
D)
polyester
E)
polyamide
18. What is the type of polymer formed when 1,5-pentanediol, HOCH2CH2CH2CH2CH2OH,
reacts with 1,6-hexanedicarboxylic acid, HOOCCH2CH2CH2CH2COOH?
A)
polyacetylene
B)
polyester
C)
polyamide
D)
polypropylene
E)
polyolefin
19. In an electrically conducting polymer, what is a “hole”?
A)
It is a region of negative charge.
B)
It is a delocalized electron.
C)
It is an antibonding molecular orbital.
D)
It is a molecular orbital from which a electron has been abstracted.
E)
It is an ion, such as I3–, added to increase the conductivity of the polymer.
20. Which of the following statements about conductive polymers is/are correct?
1.
Alternating single and double bonds are required for a polymer chain to
conduct electricity.
2.
Doping of trans-polyacetylene with I2 facilitates the conduction of electrical
charge between individual polymer molecules.
3.
trans-Polyacetylene is an addition polymer.
A)
1 only
B)
2 only
C)
3 only
D)
2 and 3
E)
1, 2, and 3
Test Bank General Chemistry, 10th edition 9
21. Which of the following is not an electrically conducting polymer?
A)
B)
C)
D)
E)
22. The side chain on the amino acid phenylalanine
is classified as
A)
polar.
B)
asymmetric.
C)
hydrophilic.
D)
nonpolar.
E)
chiral.
23. The amino acid L-lysine has the amine side chain R = −(CH2)4NH2. At low pH, all
ionizable groups are protonated. What is the net charge on this fully protonated form of L-
lysine?
A)
2
B)
1
C)
−1
D)
−2
E)
0
24. The side chain on the amino acid tyrosine
is classified as
A)
hydrophobic.
B)
nonpolar.
C)
a zwitterion.
D)
polar.
E)
asymmetric.
25. Which of the following amino acids has a hydrophobic side chain?
A)
B)
C)
D)
E)
26. Which of the following amino acids has a hydrophilic side chain?
A)
B)
C)
D)
E)