Question 1

The polymer segment ~CH2CH2CH2CH2CH2CH2CH2~ represents

Accepted Answer

A)  polyethylene. 
B)  polypropylene. 
C)  polystyrene. 
D)  polyvinyl chloride. 
A)  polyethylene. 
B)  polypropylene. 
C)  polystyrene. 
D)  polyvinyl chloride.

Question 2

Explain how an addition polymer differs from a condensation polymer.

Accepted Answer

Addition polymers are formed by the repe

Question 3

Carbon can exist is several forms. Which of the following is a form of carbon and does not contain other atoms besides carbon?

Accepted Answer

A)  fullerenes 
B)  celluloid 
C)  cellulose 
D)  starch 
A)  fullerenes 
B)  celluloid 
C)  cellulose 
D)  starch

Question 4

The monomer used to make Teflon is

Accepted Answer

A)  H2C   CH2. 
B)  Cl2C   CH2. 
C)  H2C   CHCl. 
D)  F2C   CF2. 
A)  H2C   CH2. 
B)  Cl2C   CH2. 
C)  H2C   CHCl. 
D)  F2C   CF2.

Question 5

The glass transition temperature (Tg) for a material is

Accepted Answer

A)  the temperature that the polymer is unusable. 
B)  the temperature that the polymer melts. 
C)  the temperature above which the material is hard and brittle and the temperature below which the material is tough and rubbery. 
D)  the temperature below which the material is hard and brittle and the temperature above which the material is tough and rubbery. 
A)  the temperature that the polymer is unusable. 
B)  the temperature that the polymer melts. 
C)  the temperature above which the material is hard and brittle and the temperature below which the material is tough and rubbery. 
D)  the temperature below which the material is hard and brittle and the temperature above which the material is tough and rubbery.

Question 6

Styrene-butadiene rubber (SBR) is a

Accepted Answer

A)  condensation polymer. 
B)  vulcanized rubber. 
C)  copolymer. 
D)  all of the above 
A)  condensation polymer. 
B)  vulcanized rubber. 
C)  copolymer. 
D)  all of the above

Question 7

Polyester is an example of a condensation polymer.

Accepted Answer

A) True 
 B)False

Question 8

When polyester is formed as a film as opposed to a fiber, it is used in

Accepted Answer

A)  party balloons. 
B)  floor tile. 
C)  bulletproof vests. 
D)  artificial limbs. 
A)  party balloons. 
B)  floor tile. 
C)  bulletproof vests. 
D)  artificial limbs.

Question 9

One of the first applications of polyethylene was

Accepted Answer

A)  billiard balls. 
B)  garbage bags. 
C)  electrical insulation. 
D)  parachutes. 
A)  billiard balls. 
B)  garbage bags. 
C)  electrical insulation. 
D)  parachutes.

Question 10

HDPE stands for

Accepted Answer

A)  high-density polyethylene. 
B)  hot-dipped polyethylene. 
C)  high-dose polyethylene. 
D)  highly-diffuse polyethylene. 
A)  high-density polyethylene. 
B)  hot-dipped polyethylene. 
C)  high-dose polyethylene. 
D)  highly-diffuse polyethylene.

Question 11

What is Teflon used for?

Accepted Answer

A)  food wrap 
B)  nonstick cookware 
C)  bullet-proof vests 
D)  garbage bags 
A)  food wrap 
B)  nonstick cookware 
C)  bullet-proof vests 
D)  garbage bags

Question 12

The pendant group in polystyrene is a(n)

Accepted Answer

A)  benzene ring. 
B)  chlorine atom. 
C)  ethyl group. 
D)  methyl group. 
A)  benzene ring. 
B)  chlorine atom. 
C)  ethyl group. 
D)  methyl group.

Question 13

Celluloid is a chemical modification of which natural product?

Accepted Answer

A)  cellulose 
B)  cells 
C)  ivory 
D)  cellophane 
A)  cellulose 
B)  cells 
C)  ivory 
D)  cellophane

Question 14

One example of a condensation polymer is

Accepted Answer

A)  polyvinyl chloride. 
B)  nylon. 
C)  Plexiglass. 
D)  polyvinyl acetate. 
A)  polyvinyl chloride. 
B)  nylon. 
C)  Plexiglass. 
D)  polyvinyl acetate.

Question 15

Sulfur acts as a cross-linker when rubber is vulcanized. Explain why this cross-linking improves the performance of rubber.

Accepted Answer

Sulfur acts as a cross-linker during the

Question 16

Thermoplastic polymers may be

Accepted Answer

A)  heated and reformed. 
B)  heated, but not reformed. 
C)  decomposed by heating. 
D)  changed in color by heating. 
A)  heated and reformed. 
B)  heated, but not reformed. 
C)  decomposed by heating. 
D)  changed in color by heating.

Question 17

The monomer used to make PVC is

Accepted Answer

A)  H2C   CH2. 
B)  Cl2C   CH2. 
C)  H2C   CHCl. 
D)  F2C   CF2. 
A)  H2C   CH2. 
B)  Cl2C   CH2. 
C)  H2C   CHCl. 
D)  F2C   CF2.

Question 18

Plasticizers are liquids of low volatility which can be lost by diffusion or evaporation as a plastic material ages.

Accepted Answer

A) True 
 B)False

Question 19

Polyethylene is NOT

Accepted Answer

A)  tough. 
B)  flexible. 
C)  a thermoplastic polymer. 
D)  a thermosetting polymer. 
A)  tough. 
B)  flexible. 
C)  a thermoplastic polymer. 
D)  a thermosetting polymer.

Question 20

Vulcanization of rubber was discovered by

Accepted Answer

A)  Charles Goodrich. 
B)  Charles Goodyear. 
C)  Charles Firestone. 
D)  Charles Vulcan. 
A)  Charles Goodrich. 
B)  Charles Goodyear. 
C)  Charles Firestone. 
D)  Charles Vulcan.

Exam 10: Polymers

The polymer segment ~CH2CH2CH2CH2CH2CH2CH2~ represents

Explain how an addition polymer differs from a condensation polymer.

Carbon can exist is several forms. Which of the following is a form of carbon and does not contain other atoms besides carbon?

The monomer used to make Teflon is

The glass transition temperature (Tg) for a material is

Styrene-butadiene rubber (SBR) is a

Polyester is an example of a condensation polymer.

When polyester is formed as a film as opposed to a fiber, it is used in

One of the first applications of polyethylene was

HDPE stands for

What is Teflon used for?

The pendant group in polystyrene is a(n)

Celluloid is a chemical modification of which natural product?

One example of a condensation polymer is

Sulfur acts as a cross-linker when rubber is vulcanized. Explain why this cross-linking improves the performance of rubber.

Thermoplastic polymers may be

The monomer used to make PVC is

Plasticizers are liquids of low volatility which can be lost by diffusion or evaporation as a plastic material ages.

Polyethylene is NOT

Vulcanization of rubber was discovered by

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The polymer segment ~CH₂CH₂CH₂CH₂CH₂CH₂CH₂~ represents

The glass transition temperature (T_g) for a material is