Question 1

Which of the following best describes crystallites?

Accepted Answer

A)  crossed linked chains with disulfide bridges 
B)  linearly arranged chains held together by van der Waals forces 
C)  crossed linked chains held together by van der Waals forces 
D)  linearly arranged chains with disulfide bridges 
E)  hydrogen bonding between chains 
A)  crossed linked chains with disulfide bridges 
B)  linearly arranged chains held together by van der Waals forces 
C)  crossed linked chains held together by van der Waals forces 
D)  linearly arranged chains with disulfide bridges 
E)  hydrogen bonding between chains

Question 2

________ regions in polymers make the polymer hard and durable.

Accepted Answer

A)  amorphous 
B)  cross linked 
C)  crystalline 
D)  A and B 
E)  B and C 
A)  amorphous 
B)  cross linked 
C)  crystalline 
D)  A and B 
E)  B and C

Question 3

Which of the following is used as an initiator in radical polymerization?

Accepted Answer

A)  BF3, H2O 
B)  CH3CH2CH2CH2Li 
C)  ROOR 
D)  NaOH 
E)  H2O 
A)  BF3, H2O 
B)  CH3CH2CH2CH2Li 
C)  ROOR 
D)  NaOH 
E)  H2O

Question 4

Identify the type of addition that is used to form Superglue.

Accepted Answer

A)  anionic 
B)  cationic 
C)  radical 
D)  condensation 
E)  elimination 
A)  anionic 
B)  cationic 
C)  radical 
D)  condensation 
E)  elimination

Question 5

Which one of the following monomers will produce poly(vinyl chloride)?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these

Question 6

Which one of the following is the best classification of chewing gum?

Accepted Answer

A)  fibers 
B)  elastomers 
C)  plasticizers 
D)  thermoplastics 
E)  thermosetting resins 
A)  fibers 
B)  elastomers 
C)  plasticizers 
D)  thermoplastics 
E)  thermosetting resins

Question 7

Which of the following best describe elastomers?

Accepted Answer

A)  polymers that are hard at room temperature 
B)  polymers that return to original shape after being stretched 
C)  small molecules that are added to polymers to increase flexibility 
D)  polymers that can form fibers 
E)  none of these 
A)  polymers that are hard at room temperature 
B)  polymers that return to original shape after being stretched 
C)  small molecules that are added to polymers to increase flexibility 
D)  polymers that can form fibers 
E)  none of these

Question 8

Which of the following processes is used in the recycling of soft drink bottles made of PET?

Accepted Answer

A)  esterification 
B)  acid hydrolysis 
C)  melting 
D)  B and C 
E)  none of these 
A)  esterification 
B)  acid hydrolysis 
C)  melting 
D)  B and C 
E)  none of these

Question 9

Which one of the following is the correct structure for poly(methyl $\alpha$-cyanoacrylate?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these

Question 10

Which of the following polymerization processes best describes the formation of polycarbonates?

Accepted Answer

A)  step growth addition 
B)  chain growth addition 
C)  step growth condensation 
D)  chain growth condensation 
E)  none of these 
A)  step growth addition 
B)  chain growth addition 
C)  step growth condensation 
D)  chain growth condensation 
E)  none of these

Question 11

Which of the following polymers would be best prepared using cationic polymerization?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these

Question 12

Which one of the following is the correct structure for polystyrene?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these

Question 13

Which of the following elements is used during the vulcanization of rubber?

Accepted Answer

A)  silicon 
B)  aluminum 
C)  sulfur 
D)  phosphorous 
E)  Aluminum 
A)  silicon 
B)  aluminum 
C)  sulfur 
D)  phosphorous 
E)  Aluminum

Question 14

Draw a possible segment of atactic polyacrylonitrile.

Accepted Answer

The answer of Draw a possible segment of atactic polyacrylonitrile....

Question 15

Provide the structure of a region of the polymer that is produced when phosgene is treated with 3,3-dimethyl-1,5-pentanediol.

Accepted Answer

The answer of Provide the structure of a region of...

Question 16

The following polymer is classified as a(n) ________.

Accepted Answer

A)  homopolymer 
B)  block copolymer 
C)  graft copolymer 
D)  alternating copolymer 
E)  random copolymer 
A)  homopolymer 
B)  block copolymer 
C)  graft copolymer 
D)  alternating copolymer 
E)  random copolymer

Question 17

Which of the following monomer(s) would undergo cationic polymerization?
A. vinylidene fluoride
B. acrylonitrile
C. isobutylene
D. vinyl acetate
E. all of these

Accepted Answer

The answer of Which of the following monomer(s) would undergo...

Question 18

SBR (styrene-butadiene rubber) is used in the manufacturing of automobile tires. Provide a region of the structure of this polymer.

Accepted Answer

The answer of SBR (styrene-butadiene rubber) is used in the...

Question 19

Which of the following is (are) condensation polymer(s)?

Accepted Answer

A)  nylon 6,6 
B)  polyisobutylene 
C)  poly(vinyl chloride) 
D)  polycarbonate 
E)  A and D 
A)  nylon 6,6 
B)  polyisobutylene 
C)  poly(vinyl chloride) 
D)  polycarbonate 
E)  A and D

Question 20

Which one of the following monomers will produce polyisoprene?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these

Exam 27: Synthetic Polymers

Which of the following best describes crystallites?

________ regions in polymers make the polymer hard and durable.

Which of the following is used as an initiator in radical polymerization?

Identify the type of addition that is used to form Superglue.

Which one of the following monomers will produce poly(vinyl chloride)?

Which one of the following is the best classification of chewing gum?

Which of the following best describe elastomers?

Which of the following processes is used in the recycling of soft drink bottles made of PET?

Which one of the following is the correct structure for poly(methyl α\alphaα -cyanoacrylate?

Which of the following polymerization processes best describes the formation of polycarbonates?

Which of the following polymers would be best prepared using cationic polymerization?

Which one of the following is the correct structure for polystyrene?

Which of the following elements is used during the vulcanization of rubber?

Draw a possible segment of atactic polyacrylonitrile.

Provide the structure of a region of the polymer that is produced when phosgene is treated with 3,3-dimethyl-1,5-pentanediol.

The following polymer is classified as a(n) ________.

Which of the following monomer(s) would undergo cationic polymerization? A. vinylidene fluoride B. acrylonitrile C. isobutylene D. vinyl acetate E. all of these

SBR (styrene-butadiene rubber) is used in the manufacturing of automobile tires. Provide a region of the structure of this polymer.

Which of the following is (are) condensation polymer(s)?

Which one of the following monomers will produce polyisoprene?

A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Filters

Which one of the following is the correct structure for poly(methyl $\alpha$ -cyanoacrylate? $Which one of the following is the correct structure for poly(methyl \alpha -cyanoacrylate?$