Question 1

The "big six" polymers are all classified as thermoplastics because they

Accepted Answer

A) are all used as insulators. 
B) can be melted and shaped. 
C) are all crystalline. 
D) are all amorphous.

Question 2

When I and II react together to make nylon,what are the products of the first condensation reaction?

Accepted Answer

A)   
B)   
C)   
D)

Question 3

This is a structural formula for propylene.  Which of these does represent a possible arrangement of monomers within polypropylene?

Accepted Answer

A)   
B)   
C)   
D)

Question 4

Which bond represents the peptide bond?

Accepted Answer

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

Question 5

Which of these statements are correct for condensation polymerization only?
i.Monomer units chemically bond together
ii.Product contains all the atoms of the starting material
iii.A second product,like water,is also formed during the polymerization process

Accepted Answer

A) i only 
B) i and ii 
C) ii only 
D) i and iii

Question 6

The regions of a polymer where the long polymer molecules are arranged neatly and tightly in a regular pattern is called the ________ region.

Accepted Answer

A) crystalline 
B) amorphous 
C) condensed 
D) porous

Question 7

Some of the uses for polypropylene are yogurt containers,carpeting,luggage,and bottle caps.Which is not a property of polypropylene?

Accepted Answer

A) High melting point 
B) Very tough 
C) Transparent 
D) Resistant to oils

Question 8

Will synthetic polymers always have to be made from crude oil?

Accepted Answer

A) Yes,because although other technologies exist,they are too costly for large scale use 
B) No,but there are no funds to research new technologies needed 
C) Yes,but more crude oil will have to be diverted from other uses 
D) No,new technologies are being developed to use bio-based raw materials

Question 9

The distinctive arrangements of atoms that impart characteristic chemical properties to the molecules that contain them are called

Accepted Answer

A) monomers. 
B) functional groups. 
C) radicals. 
D) transition states.

Question 10

Every year about 100 billion pounds of plastic are produced in the United States (over 350 pounds for every woman,man,and child).What strategies may be employed to reduce the amount of plastics going into landfills?

Accepted Answer

A) Incineration 
B) Biodegradation 
C) Recycling 
D) All of these choices are correct

Question 11

This symbol  is an example of the coding symbols found on packaging materials.These symbols let consumers know

Accepted Answer

A) how the plastic was made. 
B) how to recycle the package. 
C) if the plastic is dangerous. 
D) the intended use of the material.

Question 12

PET contains what sort of linkage between the monomer units?

Accepted Answer

A) Ether 
B) Ester 
C) Amine 
D) Peptide bond

Question 13

The general formula for coal is C135H96NOS,the molecular formula for methane is CH4 and the molecular formula for dodecane is C12H26.Which will the heat of combustion of polyethylene be more similar to?

Accepted Answer

A) Coal 
B) Methane 
C) Dodecane 
D) Hydrogen gas

Question 14

Which polymer is incorrectly matched with its use?

Accepted Answer

A) LDPE-plastic bag 
B) HDPE-milk jug 
C) PS-contact lenses 
D) PET-soda bottles

Question 15

These are the two monomers used to synthesize Kevlar.  Which of the following represent the products formed after one condensation reaction between the monomers?

Accepted Answer

A)   
B)   
C)   
D)

Question 16

These are the densities of some common plastics: PET 1.38 to 1.39 g/mL;HDPE 0.95 to 0.97 g/mL;LDPE 0.90 to 0.91 g/mL.Based on these densities,which plastic/s will sink in an ethanol/water mixture that has a density of 0.94 g/mL?

Accepted Answer

A) PET only 
B) PET and HDPE 
C) HDPE only 
D) LDPE only

Question 17

Which atoms are present in all proteins?

Accepted Answer

A) C,H,O,N 
B) C,H,O,S 
C) C,H,O only 
D) C,H,N only

Question 18

This is a schematic representation of the two different forms of polyethylene.  Which of the following statements is true?

Accepted Answer

A) I is HDPE and it has a lower melting point than II which is LDPE 
B) I is HDPE and it has a higher melting point than II which is LDPE 
C) I is LDPE and it has a lower melting point than II which is HDPE 
D) I is LDPE and it has a higher melting point than II which is HDPE

Question 19

A polymer is a large molecule

Accepted Answer

A) made up of long chains of atoms held together by hydrogen bonds. 
B) made up of long chains of atoms covalently bonded together. 
C) made up of a large lattice structure held together by ionic bonds. 
D) always made up of identical monomer units.

Question 20

Which synthetic polymer has two forms,crystal and expandable?

Accepted Answer

A) PET 
B) HDPE 
C) LDPE 
D) PS

Exam 9: The World of Polymers and Plastics

The "big six" polymers are all classified as thermoplastics because they

When I and II react together to make nylon,what are the products of the first condensation reaction?

This is a structural formula for propylene. Which of these does represent a possible arrangement of monomers within polypropylene?

Which bond represents the peptide bond?

Which of these statements are correct for condensation polymerization only? i.Monomer units chemically bond together ii.Product contains all the atoms of the starting material iii.A second product,like water,is also formed during the polymerization process

The regions of a polymer where the long polymer molecules are arranged neatly and tightly in a regular pattern is called the ________ region.

Some of the uses for polypropylene are yogurt containers,carpeting,luggage,and bottle caps.Which is not a property of polypropylene?

Will synthetic polymers always have to be made from crude oil?

The distinctive arrangements of atoms that impart characteristic chemical properties to the molecules that contain them are called

Every year about 100 billion pounds of plastic are produced in the United States (over 350 pounds for every woman,man,and child) .What strategies may be employed to reduce the amount of plastics going into landfills?

This symbol is an example of the coding symbols found on packaging materials.These symbols let consumers know

PET contains what sort of linkage between the monomer units?

The general formula for coal is C₁₃₅H₉₆NOS,the molecular formula for methane is CH₄ and the molecular formula for dodecane is C₁₂H₂₆.Which will the heat of combustion of polyethylene be more similar to?

Which polymer is incorrectly matched with its use?

These are the two monomers used to synthesize Kevlar. Which of the following represent the products formed after one condensation reaction between the monomers?

These are the densities of some common plastics: PET 1.38 to 1.39 g/mL;HDPE 0.95 to 0.97 g/mL;LDPE 0.90 to 0.91 g/mL.Based on these densities,which plastic/s will sink in an ethanol/water mixture that has a density of 0.94 g/mL?

Which atoms are present in all proteins?

This is a schematic representation of the two different forms of polyethylene. Which of the following statements is true?

A polymer is a large molecule

Which synthetic polymer has two forms,crystal and expandable?