Question 1

Vulcanization of rubber results in _______ between the neighboring chains of the polymer.

Accepted Answer

A) hydrogen bonding 
B) salt bridges 
C) phosphide bridges 
D) disulfide bridges 
E) none of these 
A) hydrogen bonding 
B) salt bridges 
C) phosphide bridges 
D) disulfide bridges 
E) none of these

Question 2

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

Question 3

Which one of the following is the correct structure for poly(vinyl acetate)?

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 4

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 5

________ regions in polymers make the polymer flexible.

Accepted Answer

A) amorphous 
B) cross linked 
C) crystalline 
D) B & C 
E) none of these 
A) amorphous 
B) cross linked 
C) crystalline 
D) B & C 
E) none of these

Question 6

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

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 7

The glass transition temperature (Tg),is the temperature at which the ________regions of the polymers become ________.

Accepted Answer

A) crystalline,amorphous 
B) amorphous,hard 
C) crystalline,hard 
D) amorphous,soft 
E) none of these 
A) crystalline,amorphous 
B) amorphous,hard 
C) crystalline,hard 
D) amorphous,soft 
E) none of these

Question 8

Which one of the following monomers will produce polyisobutylene?

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 9

The melt transition temperature (Tm),is the temperature at which the ________ regions of the polymers become ________.

Accepted Answer

A) crystalline,amorphous 
B) amorphous,hard 
C) crystalline,hard 
D) non-crystalline,soft 
E) none of these 
A) crystalline,amorphous 
B) amorphous,hard 
C) crystalline,hard 
D) non-crystalline,soft 
E) none of these

Question 10

Provide the structure of monomer(s)that would produce the following condensation polymer.

Accepted Answer

The answer of Provide the structure of monomer(s)that would produce...

Question 11

Provide the structure 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 the polymer that...

Question 12

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

Accepted Answer

A) BF3,H2O 
B) CH3CH2CH2CH2Li 
C) ROOR 
D) NaOH 
E) none of these 
A) BF3,H2O 
B) CH3CH2CH2CH2Li 
C) ROOR 
D) NaOH 
E) none of these

Question 13

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

Accepted Answer

A) BF3,H2O 
B) CH3CH2CH2CH2Li 
C) ROOR 
D) H2SO4 
E) none of these 
A) BF3,H2O 
B) CH3CH2CH2CH2Li 
C) ROOR 
D) H2SO4 
E) none of these

Question 14

_________polymerization usually forms living polymers if the process is not terminated by an electrophile.

Accepted Answer

A) anionic 
B) cationic 
C) radical 
D) A & B 
E) B & C 
A) anionic 
B) cationic 
C) radical 
D) A & B 
E) B & C

Question 15

Draw a possible segment of syndiotactic poly(vinyl fluoride).

Accepted Answer

The answer of Draw a possible segment of syndiotactic poly(vinyl...

Question 16

Which of the following monomer(s)would undergo both radical and cationic polymerization?

Accepted Answer

A) methylmethacrylate 
B) acrylonitrile 
C) isobutylene 
D) vinylidine chloride 
E) all of these 
A) methylmethacrylate 
B) acrylonitrile 
C) isobutylene 
D) vinylidine chloride 
E) all of these

Question 17

Which of the following best describe biodegradable polymers?

Accepted Answer

A) polymers that can be broken down by enzymes produced by microorganisms 
B) polymers with ester moieties 
C) polymers with amide moieties 
D) polymers known as polyhydroxyalkanoates 
E) all of these 
A) polymers that can be broken down by enzymes produced by microorganisms 
B) polymers with ester moieties 
C) polymers with amide moieties 
D) polymers known as polyhydroxyalkanoates 
E) all of these

Question 18

________ regions in polymers make the polymer hard and durable.

Accepted Answer

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

Question 19

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

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 20

Polymers with single monomers are called_______,where as those with two or more different monomers are called________.

Accepted Answer

A) copolymers,homopolymers 
B) homopolymers,copolymers 
C) block polymers,homopolymers 
D) homopolymers,block polymers 
E) none of these 
A) copolymers,homopolymers 
B) homopolymers,copolymers 
C) block polymers,homopolymers 
D) homopolymers,block polymers 
E) none of these

Exam 27: Synthetic Polymers

Vulcanization of rubber results in _______ between the neighboring chains of the polymer.

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

Which one of the following is the correct structure for poly(vinyl acetate)?

Which of the following best describe elastomers?

________ regions in polymers make the polymer flexible.

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

The glass transition temperature (Tg),is the temperature at which the ________regions of the polymers become ________.

Which one of the following monomers will produce polyisobutylene?

The melt transition temperature (Tm),is the temperature at which the ________ regions of the polymers become ________.

Provide the structure of monomer(s)that would produce the following condensation polymer.

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

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

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

_________polymerization usually forms living polymers if the process is not terminated by an electrophile.

Draw a possible segment of syndiotactic poly(vinyl fluoride).

Which of the following monomer(s)would undergo both radical and cationic polymerization?

Which of the following best describe biodegradable polymers?

________ regions in polymers make the polymer hard and durable.

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

Polymers with single monomers are called_______,where as those with two or more different monomers are called________.

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

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Substitution Reactions

Alkenes: Structure and Preparation Via Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Nuclear Magnetic Resonance Spectroscopy

Infrared Spectroscopy and Mass Spectrometry

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

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Filters

The glass transition temperature (Tg),is the temperature at which the regions of the polymers become .

The melt transition temperature (Tm),is the temperature at which the regions of the polymers become .

Polymers with single monomers are called_,where as those with two or more different monomers are called__.