Question 1

Thermosetting polymers can be melted and reformed into different shapes.

Accepted Answer

A) True 
 B)False

Question 2

Another name for Teflon is

Accepted Answer

A) LDPE. 
B) PVC. 
C) PTFE. 
D) HDPE. 
A) LDPE. 
B) PVC. 
C) PTFE. 
D) HDPE.

Question 3

Explain how an addition polymer differs from a condensation polymer.

Accepted Answer

Addition polymers are formed by the repe

Question 4

Nylons are named according to the number of ________ atoms in each monomer unit.

Accepted Answer

A) hydrogen 
B) nitrogen 
C) oxygen 
D) carbon 
A) hydrogen 
B) nitrogen 
C) oxygen 
D) carbon

Question 5

The first "practical" application of celluloid was

Accepted Answer

A) billiard balls. 
B) movie film. 
C) stiff collars. 
D) airplane wings. 
A) billiard balls. 
B) movie film. 
C) stiff collars. 
D) airplane wings.

Question 6

Polyvinyl chloride is used for drain pipe in plumbing applications.It has replaced traditional cast iron pipe for this purpose.List the advantages of PVC for plumbers,the plumbing industry and homeowners.

Accepted Answer

Polyvinyl chloride (PVC) has become a po

Question 7

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 8

Composite materials are used for

Accepted Answer

A) paint. 
B) disposable cups. 
C) thread. 
D) automobile panels. 
A) paint. 
B) disposable cups. 
C) thread. 
D) automobile panels.

Question 9

Which of the following statements about biodegradable polymers is true?

Accepted Answer

A) They will degrade quickly in a landfill. 
B) Thermosetting polymers are biodegradable, but thermoplastics are not. 
C) They often require specific temperatures or the presence of microorganisms in order to undergo degradation. 
D) Polyvinyl chloride is a biodegradable polymer. 
A) They will degrade quickly in a landfill. 
B) Thermosetting polymers are biodegradable, but thermoplastics are not. 
C) They often require specific temperatures or the presence of microorganisms in order to undergo degradation. 
D) Polyvinyl chloride is a biodegradable polymer.

Question 10

Thermosetting resins will decompose rather than melt when they are heated to a high temperature.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is a problem with the use of plastics?

Accepted Answer

A) They have a low density. 
B) They can conduct electricity. 
C) They are made from petroleum and natural gas. 
D) They can be made from renewable plant resource. 
A) They have a low density. 
B) They can conduct electricity. 
C) They are made from petroleum and natural gas. 
D) They can be made from renewable plant resource.

Question 12

This formula in which n can be a very large number represents which of the following polymers?

Accepted Answer

A) polyethylene 
B) polyvinyl chloride 
C) polypropylene 
D) teflon 
A) polyethylene 
B) polyvinyl chloride 
C) polypropylene 
D) teflon

Question 13

All of the following statements about biodegradable polymers are true EXCEPT

Accepted Answer

A) some can biodegrade by composting. 
B) the most sustainable approach is to use renewable resources, especially non-food crops, as a monomer source. 
C) their glass transition temperatures are very high. 
D) many require microorganisms to degrade them. 
A) some can biodegrade by composting. 
B) the most sustainable approach is to use renewable resources, especially non-food crops, as a monomer source. 
C) their glass transition temperatures are very high. 
D) many require microorganisms to degrade them.

Question 14

Which of the following is a naturally occurring polymer?

Accepted Answer

A) celluloid 
B) nylon 
C) starch 
D) None of the above is a naturally occurring polymer. 
A) celluloid 
B) nylon 
C) starch 
D) None of the above is a naturally occurring polymer.

Question 15

The most widely used synthetic polymer is

Accepted Answer

A) polyethylene. 
B) polyvinyl chloride. 
C) polystyrene. 
D) polytetrafluoroethylene (Teflon). 
A) polyethylene. 
B) polyvinyl chloride. 
C) polystyrene. 
D) polytetrafluoroethylene (Teflon).

Question 16

Draw part of the repeating structure of polymethyl methacrylate.

Accepted Answer

Polymethyl methacrylate (PMMA), also kno

Question 17

Silicons are NOT used for

Accepted Answer

A) lubricants. 
B) garbage bags. 
C) hydraulic fluids. 
D) shoe polish. 
A) lubricants. 
B) garbage bags. 
C) hydraulic fluids. 
D) shoe polish.

Question 18

The temperature in many parts of the world can range between 0°C and 40°C,therefore we want the Tg of PVC used as seat covers in cars to be

Accepted Answer

A) greater than 40°C. 
B) less than 40°C but greater than 0°C. 
C) exactly 0°C. 
D) less than 0°C. 
A) greater than 40°C. 
B) less than 40°C but greater than 0°C. 
C) exactly 0°C. 
D) less than 0°C.

Question 19

Which of the following is NOT true of composite materials?

Accepted Answer

A) They contain high-strength fibers, often made from glass, graphite or ceramics. 
B) The fibers provide support to the composite material. 
C) The fibers are usually held together by a thermosetting condensation polymer. 
D) The composite materials are not very strong. 
A) They contain high-strength fibers, often made from glass, graphite or ceramics. 
B) The fibers provide support to the composite material. 
C) The fibers are usually held together by a thermosetting condensation polymer. 
D) The composite materials are not very strong.

Question 20

The greatest hazard in using plastics in home building materials and furnishings is that some

Accepted Answer

A) poison children who eat them. 
B) cause cancer. 
C) are slippery. 
D) form poisonous gases when burned. 
A) poison children who eat them. 
B) cause cancer. 
C) are slippery. 
D) form poisonous gases when burned.

Exam 10: Polymers

Thermosetting polymers can be melted and reformed into different shapes.

Another name for Teflon is

Explain how an addition polymer differs from a condensation polymer.

Nylons are named according to the number of ________ atoms in each monomer unit.

The first "practical" application of celluloid was

Polyvinyl chloride is used for drain pipe in plumbing applications.It has replaced traditional cast iron pipe for this purpose.List the advantages of PVC for plumbers,the plumbing industry and homeowners.

The glass transition temperature (Tg)for a material is

Composite materials are used for

Which of the following statements about biodegradable polymers is true?

Thermosetting resins will decompose rather than melt when they are heated to a high temperature.

Which of the following is a problem with the use of plastics?

This formula in which n can be a very large number represents which of the following polymers?

All of the following statements about biodegradable polymers are true EXCEPT

Which of the following is a naturally occurring polymer?

The most widely used synthetic polymer is

Draw part of the repeating structure of polymethyl methacrylate.

Silicons are NOT used for

The temperature in many parts of the world can range between 0°C and 40°C,therefore we want the Tg of PVC used as seat covers in cars to be

Which of the following is NOT true of composite materials?

The greatest hazard in using plastics in home building materials and furnishings is that some

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