Question 1

What is meant by HIPS?

Accepted Answer

A)   High polysaccharides
B)   High in polysaccharides
C)   Highly ionic polymer solution
D)   High-impact polystyrene
E)   Highly ionic protein solutionF) All of the above
G) D) and E)

Question 2

________ are materials that can stretch or bend and then return to their original shape as long as elasticity limits are not exceeded.

Accepted Answer

The answer of ________ are materials that can stretch or...

Question 3

________ is the process of preparing ceramics by heating a slurry of a powder of the inorganic substance in water to a very high temperature under high pressure.

Accepted Answer

The answer of ________ is the process of preparing ceramics...

Question 4

Polymers where the substituents are oriented randomly along the polymer chain are called ________.

Accepted Answer

The answer of Polymers where the substituents are oriented randomly...

Question 5

What type of polymer is represented by the following repeating segment?

Accepted Answer

A)   Polyamide
B)   Polyester
C)   Polyether
D)   Polyolefin
E)   PolyethyleneF) B) and E)
G) A) and E) B

Question 6

________ ________ and ________ are polymers that have been used in total joint replacements.

Accepted Answer

Polymethyl methacrylate; polyethylene

Question 7

The segment  represents the polymer named

Accepted Answer

A)   polyethylene.
B)   polyvinyl chloride.
C)   polystyrene.
D)   polybutylene.
E)   polypropylene.F) B) and C)
G) B) and E)

Question 8

What is the name of the condensation copolymer formed from ethylene glycol (a diol-a molecule with two alcohol groups)  and para-terephthalic acid (a diacid-a molecule with two carboxy groups) ?

Accepted Answer

A)   Nylon 6,6
B)   Kevlar
C)   Polystyrene
D)   Dacron
E)   StyrofoamF) A) and B)
G) None of the above

Question 9

Most high-temperature superconducting materials are

Accepted Answer

A)   metals.
B)   metal chlorides.
C)   polymers.
D)   fullerenes.
E)   ceramics.F) B) and D)
G) B) and C)

Question 10

What is a material called that can stretch or bend and then return to its original shape as long as certain limits are not exceeded?

Accepted Answer

A)   Glue
B)   Elongater
C)   Extender
D)   Flexi-polymer
E)   ElastomerF) C) and E)
G) B) and E)

Question 11

What is the name of the substance made from two or more substances with different properties that remain separate in the bulk material?

Accepted Answer

A)   Composite material
B)   Bipolymer
C)   Copolymer
D)   Dipolymer
E)   Matrix materialF) B) and E)
G) B) and D)

Question 12

Which monomer, when polymerized, results in the polymer polystyrene?

Accepted Answer

A)   CF2=CF2
B)   CCl2=CF2
C)   C6H5-CH=CH2 
D)   CH3CH=CH2
E)   CH3CH=CH2CH3F) D) and E)
G) B) and E)

Question 13

Which of the following is a synthetic polymer?

Accepted Answer

A)   cellulose
B)   polyisoprene
C)   DNA
D)   poly(hexamethyleneadipamide) 
E)   enzymesF) D) and E)
G) None of the above

Question 14

Which element, or combination of elements, could produce a semiconductor with the following band structure? (CB = conduction band, VB = valence band)

Accepted Answer

A)   Pure Si
B)   Si and C
C)   Si and In
D)   Si and Sb
E)   Si and FF) A) and D)
G) B) and C)

Question 15

What is the name given to the polymers that can be melted and reshaped or heated and bent?

Accepted Answer

A)   Flex polymers
B)   Thermal polymers
C)   T-polymers
D)   Thermoplastic polymers
E)   Thermosetting polymersF) A) and D)
G) A) and C)

Question 16

Polyacrylonitrile, characterized by the following repeating unit, is made from which of these monomers? 3CH2CN B)  HOCH2CH2CH3 C)  CH3CH=CHCN D)  CH2=CHCN E)  CH2=CNCH3" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   CH3CH2CN
B)   HOCH2CH2CH3
C)   CH3CH=CHCN
D)   CH2=CHCN
E)   CH2=CNCH3F) A) and B)
G) A) and E)

Question 17

What type of polymer is represented by the following repeating segment?

Accepted Answer

A)   Polyamide
B)   Polyester
C)   Polyether
D)   Polyolefin
E)   PolyethyleneF) A) and D)
G) B) and C)

Question 18

What is one of the most common uses of polystyrene?

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) D) and E)

Question 19

Which one of these molecules could not serve as a monomer for an addition polymer?

Accepted Answer

A)   ClCH=CH2
B)   H2C=CH-CN
C)   H2C=CH-C6H5 
D)   2 
B)   H2C=CH-CN 
C)   H2C=CH-C6H5  
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   2 
B)   H2C=CH-CN 
C)   H2C=CH-C6H5  
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) D) and E)
G) C) and E) E

Question 20

Materials with a small energy gap between the valence band and the conduction band are called

Accepted Answer

A)   conductors.
B)   insulators.
C)   metals.
D)   semiconductors.
E)   nonconductors.F) All of the above
G) None of the above

Exam 12: Modern Materials

What is meant by HIPS?

Correct AnswerverifiedShow Answer

________ are materials that can stretch or bend and then return to their original shape as long as elasticity limits are not exceeded.

Correct AnswerverifiedShow Answer

________ is the process of preparing ceramics by heating a slurry of a powder of the inorganic substance in water to a very high temperature under high pressure.

Correct AnswerverifiedShow Answer

Polymers where the substituents are oriented randomly along the polymer chain are called ________.

Correct AnswerverifiedShow Answer

What type of polymer is represented by the following repeating segment?

Correct AnswerverifiedB

________ ________ and ________ are polymers that have been used in total joint replacements.

Correct AnswerverifiedPolymethyl methacrylate; polyethylene

The segment represents the polymer named

Correct AnswerverifiedShow Answer

What is the name of the condensation copolymer formed from ethylene glycol (a diol-a molecule with two alcohol groups) and para-terephthalic acid (a diacid-a molecule with two carboxy groups) ?

Correct AnswerverifiedShow Answer

Most high-temperature superconducting materials are

Correct AnswerverifiedShow Answer

What is a material called that can stretch or bend and then return to its original shape as long as certain limits are not exceeded?

Correct AnswerverifiedShow Answer

What is the name of the substance made from two or more substances with different properties that remain separate in the bulk material?

Correct AnswerverifiedShow Answer

Which monomer, when polymerized, results in the polymer polystyrene?

Correct AnswerverifiedShow Answer

Which of the following is a synthetic polymer?

Correct AnswerverifiedShow Answer

Which element, or combination of elements, could produce a semiconductor with the following band structure? (CB = conduction band, VB = valence band)

Correct AnswerverifiedShow Answer

What is the name given to the polymers that can be melted and reshaped or heated and bent?

Correct AnswerverifiedShow Answer

Polyacrylonitrile, characterized by the following repeating unit, is made from which of these monomers?

Correct AnswerverifiedShow Answer

What type of polymer is represented by the following repeating segment?

Correct AnswerverifiedShow Answer

What is one of the most common uses of polystyrene?

Correct AnswerverifiedShow Answer

Which one of these molecules could not serve as a monomer for an addition polymer?

Correct AnswerverifiedE

Materials with a small energy gap between the valence band and the conduction band are called

Correct AnswerverifiedShow Answer

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B

and are polymers that have been used in total joint replacements.

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Polymethyl methacrylate; polyethylene

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E

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