Question 1

A thermoplastic polymer can be melted and reshaped or heated and bent.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following contains a phenyl group?

Accepted Answer

A)   Polyethylene
B)   PVC
C)   Polystyrene
D)   Nylon 6,6
E)   TeflonF) A) and B)
G) B) and E)

Question 3

In order to form a condensation polymer from the following monomer, which other monomer should be selected?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and C)
G) D) and E)

Question 4

A polymer made in a polymerization reaction that produces small molecules (such as water)  as well as the polymer is classified as a/an ________ polymer.

Accepted Answer

A)   addition
B)   natural
C)   condensation
D)   elimination
E)   copolymerF) A) and B)
G) C) and E)

Question 5

________ is the process where sulfur is used to create linkages between individual polymer chains in rubber.

Accepted Answer

The answer of ________ is the process where sulfur is...

Question 6

________-________ in rubber makes the rubber much stronger and rigid than natural polyisoprene.

Accepted Answer

The answer of ________-________ in rubber makes the rubber much...

Question 7

What is the process called to prepare a ceramic by heating a slurry of a powder of an inorganic substance in water to a very high temperature under pressure?

Accepted Answer

A)   Sintering
B)   Roasting
C)   Firing
D)   Stonewaring
E)   Sol-gelF) B) and C)
G) A) and B)

Question 8

________ ________ ________ are used in calculators, watches, and laptop computers because polarized light can be transmitted through one phase but not transmitted through another.

Accepted Answer

Liquid cry...

Question 9

What is one of the most common uses of polyvinyl chloride?

Accepted Answer

A)   2-L soda bottles
B)   Styrofoam cups
C)   Plastic pipes
D)   Plastic food bags
E)   Plastic garbage cansF) A) and B)
G) A) and E)

Question 10

One characteristic of the monomers that form condensation polymers that is not common in monomers that form addition polymers is

Accepted Answer

A)   the presence of alkyl side chains.
B)   their ability to form free radicals.
C)   the presence of pi bonds.
D)   the presence of two functional groups.E) A) and B)
F) B) and D)

Question 11

What is the process called that produces particles of nearly uniform size that are much more likely to produce a solid ceramic without gaps or cracks?

Accepted Answer

A)   Sintering
B)   Roasting
C)   Firing
D)   Stonewaring
E)   Sol-gelF) C) and E)
G) A) and E)

Question 12

Which of the following is a medical application using polymers?

Accepted Answer

A)   Implants
B)   Prosthetics
C)   Wound dressings
D)   All of these choices are correct
E)   None of these choices is correct.F) A) and E)
G) B) and E)

Question 13

Liquid crystals are anisotropic, because the properties they display depend on the direction (orientation) of the measurement.

Accepted Answer

A) True 
 B)False

Question 14

What name is given to a polymer in which the substituents are oriented randomly along the polymer chain?

Accepted Answer

A)   Rotatory
B)   Atactic
C)   Swapper
D)   Isotactic
E)   SyndiotacticF) A) and B)
G) D) and E)

Question 15

Vulcanization

Accepted Answer

A)   leads to cross-linking of poly-cis-isoprene chains in rubber with sulfur.
B)   provides considerable elasticity in rubber.
C)   severs the carbon-carbon chain in rubber.
D)   provides a smooth surface to rubber.
E)   leads to cross-linking of poly-cis-isoprene chains in rubber with sulfur and provides considerable elasticity in rubber.F) B) and E)
G) B) and C)

Question 16

Which of these polymers is used in pipes and fittings?

Accepted Answer

A)   Teflon
B)   Polystyrene
C)   Dacron
D)   Nylon 6,6
E)   PVCF) A) and C)
G) A) and E)

Question 17

Which of the following polymers is used in plastic food bags and wraps?

Accepted Answer

A)   LDPE
B)   PVC
C)   Polystyrene
D)   HDPE
E)   PolypropyleneF) B) and C)
G) A) and E)

Question 18

Polystyrene with air or gas blown into the solid is the main component in Styrofoam.

Accepted Answer

A) True 
 B)False

Question 19

Which condensation polymer is used in bulletproof vests?

Accepted Answer

A)   Nylon 6,6
B)   Kevlar
C)   Polystyrene
D)   Dacron
E)   StyrofoamF) A) and E)
G) C) and D)

Question 20

Which is the best description for the following structural representation of an addition polymer? 2C=CHX. C)  It is a syndiotactic polymer made from the monomer XHC=CHX. D)  It is an isotactic polymer made from the monomer H2C=CHX. E)  It is an isotactic polymer made from the monomer XHC=CHX." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   It is an atactic polymer.
B)   It is a syndiotactic polymer made from the monomer H2C=CHX.
C)   It is a syndiotactic polymer made from the monomer XHC=CHX.
D)   It is an isotactic polymer made from the monomer H2C=CHX.
E)   It is an isotactic polymer made from the monomer XHC=CHX.F) A) and E)
G) B) and E)

Exam 12: Modern Materials

Which condensation polymer is used in bulletproof vests?

Correct AnswerverifiedShow Answer

Liquid crystals are anisotropic, because the properties they display depend on the direction (orientation) of the measurement.

Correct AnswerverifiedShow Answer

A thermoplastic polymer can be melted and reshaped or heated and bent.

Correct AnswerverifiedShow Answer

What is the process called that produces particles of nearly uniform size that are much more likely to produce a solid ceramic without gaps or cracks?

Correct AnswerverifiedShow Answer

________ ________ ________ are used in calculators, watches, and laptop computers because polarized light can be transmitted through one phase but not transmitted through another.

Correct AnswerverifiedLiquid cry...View AnswerShow Answer

Which of the following polymers is used in plastic food bags and wraps?

Correct AnswerverifiedShow Answer

________ is the process where sulfur is used to create linkages between individual polymer chains in rubber.

Correct AnswerverifiedShow Answer

A polymer made in a polymerization reaction that produces small molecules (such as water) as well as the polymer is classified as a/an ________ polymer.

Correct AnswerverifiedShow Answer

What is one of the most common uses of polyvinyl chloride?

Correct AnswerverifiedShow Answer

Which is the best description for the following structural representation of an addition polymer?

Correct AnswerverifiedShow Answer

What is the process called to prepare a ceramic by heating a slurry of a powder of an inorganic substance in water to a very high temperature under pressure?

Correct AnswerverifiedShow Answer

Which of the following contains a phenyl group?

Correct AnswerverifiedShow Answer

Which of the following is a medical application using polymers?

Correct AnswerverifiedShow Answer

Polystyrene with air or gas blown into the solid is the main component in Styrofoam.

Correct AnswerverifiedShow Answer

What name is given to a polymer in which the substituents are oriented randomly along the polymer chain?

Correct AnswerverifiedShow Answer

Vulcanization

Correct AnswerverifiedShow Answer

Which of these polymers is used in pipes and fittings?

Correct AnswerverifiedShow Answer

________-________ in rubber makes the rubber much stronger and rigid than natural polyisoprene.

Correct AnswerverifiedShow Answer

In order to form a condensation polymer from the following monomer, which other monomer should be selected?

Correct AnswerverifiedShow Answer

One characteristic of the monomers that form condensation polymers that is not common in monomers that form addition polymers is

Correct AnswerverifiedShow Answer

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are used in calculators, watches, and laptop computers because polarized light can be transmitted through one phase but not transmitted through another.

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Liquid cry...
View Answer

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- in rubber makes the rubber much stronger and rigid than natural polyisoprene.

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