Question 1

Kevlar is an example of

Accepted Answer

A) a polyester. 
B) an aramide. 
C) a polyurethane. 
D) a epoxy resin. 
E) a plasticizer. 
A) a polyester. 
B) an aramide. 
C) a polyurethane. 
D) a epoxy resin. 
E) a plasticizer.

Question 2

Identify the type of polymer for poly(vinyl chloride).

Accepted Answer

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

Question 3

What are thermosetting polymers?

Accepted Answer

Thermosetting polymers cannot

Question 4

Identify the monomer for superglue.

Accepted Answer

A) acrylamide 
B) methyl a-cyanoacrylate 
C) acrolein 
D) methyl vinyl ether 
E) styrene 
A) acrylamide 
B) methyl a-cyanoacrylate 
C) acrolein 
D) methyl vinyl ether 
E) styrene

Question 5

A substituted ethylene polymer in which the substituents are randomly oriented is called

Accepted Answer

A) a ditactic polymer. 
B) an eutatic polymer. 
C) an isotactic polymer. 
D) a syndiotatic polymer. 
E) an atactic polymer. 
A) a ditactic polymer. 
B) an eutatic polymer. 
C) an isotactic polymer. 
D) a syndiotatic polymer. 
E) an atactic polymer.

Question 6

Which of the following is more likely to undergo both radical and cationic polymerization?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 7

Which of the following statements best describes what vulcanization means?

Accepted Answer

A) a process by which rigid and non-sticky rubber can be made soft and sticky 
B) a chemical process discovered by Charles Schultz in 1944 
C) the heating of rubber with sulfur 
D) a chemical process that destroys cross-linking in rubber 
E) all of the above 
A) a process by which rigid and non-sticky rubber can be made soft and sticky 
B) a chemical process discovered by Charles Schultz in 1944 
C) the heating of rubber with sulfur 
D) a chemical process that destroys cross-linking in rubber 
E) all of the above

Question 8

When 2,2-dimethyloxirane (see figure below)undergoes anionic polymerization,the nucleophile attacks the least substituted carbon of the epoxide,but when it undergoes cationic polymerization,the nucleophile attacks the most substituted carbon of the epoxide.Explain why this is so.

Accepted Answer

In anionic polymerization,the nucleophil

Question 9

Provide the structure of Saran,an alternating copolymer of H2C   CHCl and H2C   CCl2.

Accepted Answer

Question 10

What kind of polymer is produced in the following reaction?

Accepted Answer

A) a polycarbonate 
B) a polyurethane 
C) a polyester 
D) a synthetic rubber 
E) a poly (acrylonitrile) 
A) a polycarbonate 
B) a polyurethane 
C) a polyester 
D) a synthetic rubber 
E) a poly (acrylonitrile)

Question 11

Which of the following monomers has the greatest ability to undergo cationic polymerization?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 12

The first polymer,invented by A.Parke in 1856,was

Accepted Answer

A) Polyethlene. 
B) Polyester. 
C) Polystyrene. 
D) Celluloid. 
E) Teflon. 
A) Polyethlene. 
B) Polyester. 
C) Polystyrene. 
D) Celluloid. 
E) Teflon.

Question 13

List the two major classes of synthetic polymers and give one example of each.

Accepted Answer

a)Addition polymers,also known

Question 14

Saran wrap is a copolymer of

Accepted Answer

A) vinyl chloride and vinylidene chloride. 
B) styrene and vinyl chloride. 
C) acrylonitrile and styrene. 
D) acrylonitrile and vinyl chloride. 
E) vinyl chloride and isoprene. 
A) vinyl chloride and vinylidene chloride. 
B) styrene and vinyl chloride. 
C) acrylonitrile and styrene. 
D) acrylonitrile and vinyl chloride. 
E) vinyl chloride and isoprene.

Question 15

Give the product for the following reaction.

Accepted Answer

The answer of Give the product for the following reaction....

Question 16

What is the difference between natural rubber and Gutta-percha rubber?

Accepted Answer

A) Natural rubber is hard and brittle while gutta-percha is soft and rubbery. 
B) Natural rubber is natural while gutta-percha is synthetic rubber. 
C) Natural rubber has a cis configuration while gutta-percha has a trans configuration. 
D) Natural rubber and gutta-percha rubber are enantiomers. 
E) The monomer for natural rubber is isoprene while the monomer for gutta-percha is 1,3-butadiene. 
A) Natural rubber is hard and brittle while gutta-percha is soft and rubbery. 
B) Natural rubber is natural while gutta-percha is synthetic rubber. 
C) Natural rubber has a cis configuration while gutta-percha has a trans configuration. 
D) Natural rubber and gutta-percha rubber are enantiomers. 
E) The monomer for natural rubber is isoprene while the monomer for gutta-percha is 1,3-butadiene.

Question 17

What is most widely used plasticizer?

Accepted Answer

A) epichlorohydrin 
B) diphenyl carbonate 
C) dimethylterephthalate 
D) ethylene glycol 
E) di-2-ethylhexylphthalate 
A) epichlorohydrin 
B) diphenyl carbonate 
C) dimethylterephthalate 
D) ethylene glycol 
E) di-2-ethylhexylphthalate

Question 18

Give the monomers for lexan.

Accepted Answer

The answer of Give the monomers for lexan.  ...

Question 19

From which of the following monomers is neoprene synthesized?

Accepted Answer

A) (Z)-2-chloro-2-butene 
B) (
E) -2-chloro-2-butene 
C) (
E) -1-chloro-1,3-butadiene 
D) 2-chloro-1,3-butadiene 
E) 2,3-dichloro-1,3-butadiene 
A) (Z)-2-chloro-2-butene 
B) (
E) -2-chloro-2-butene 
C) (
E) -1-chloro-1,3-butadiene 
D) 2-chloro-1,3-butadiene 
E) 2,3-dichloro-1,3-butadiene

Question 20

Identify the initiator in a cationic polymerization.

Accepted Answer

A) KOH 
B) BuLi 
C) CH3OOCH3 
D) BF3,H2O 
E) HCl 
A) KOH 
B) BuLi 
C) CH3OOCH3 
D) BF3,H2O 
E) HCl

Exam 27: Synthetic Polymers

Kevlar is an example of

Identify the type of polymer for poly(vinyl chloride).

What are thermosetting polymers?

Identify the monomer for superglue.

A substituted ethylene polymer in which the substituents are randomly oriented is called

Which of the following is more likely to undergo both radical and cationic polymerization?

Which of the following statements best describes what vulcanization means?

When 2,2-dimethyloxirane (see figure below)undergoes anionic polymerization,the nucleophile attacks the least substituted carbon of the epoxide,but when it undergoes cationic polymerization,the nucleophile attacks the most substituted carbon of the epoxide.Explain why this is so.

Provide the structure of Saran,an alternating copolymer of H2C CHCl and H2C CCl2.

What kind of polymer is produced in the following reaction?

Which of the following monomers has the greatest ability to undergo cationic polymerization?

The first polymer,invented by A.Parke in 1856,was

List the two major classes of synthetic polymers and give one example of each.

Saran wrap is a copolymer of

Give the product for the following reaction.

What is the difference between natural rubber and Gutta-percha rubber?

What is most widely used plasticizer?

Give the monomers for lexan.

From which of the following monomers is neoprene synthesized?

Identify the initiator in a cationic polymerization.

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Pericyclic Reactions

Filters

Provide the structure of Saran,an alternating copolymer of H₂C CHCl and H₂C CCl₂.