Question 1

Melamine and formaldehyde combine to form the polymer,Melmac®.How is Melmac® classified,and what physical characteristics are consistent with its structure? ®.How is Melmac® classified,and what physical characteristics are consistent with its structure?   A) Polycarbonate,transparent B) Polyurethane,elastic C) Thermosetting,rigid D) Thermoplastic,can be melted and molded into new shapes" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Polycarbonate,transparent
B)  Polyurethane,elastic
C)  Thermosetting,rigid
D)  Thermoplastic,can be melted and molded into new shapesE) C) and D)
F) None of the above

Question 2

What is the classification of the following polymer in which X and Y represent repeating units?

Accepted Answer

A)  Block copolymer
B)  Homopolymer
C)  Alternating copolymer
D)  Random copolymerE) B) and D)
F) C) and D)

Question 3

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde.What is (are) the product(s) of the first step in this polymerization,shown below? (Note: in the answers below the hydroxymethyl group is -CH2OH.)  2OH.)    A) Ortho and para-hydroxybenzaldehyde B) Meta-hydroxybenzaldehyde C) Ortho and para-(hydroxymethyl) phenol D) Meta-(hydroxymethyl) phenol" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Ortho and para-hydroxybenzaldehyde
B)  Meta-hydroxybenzaldehyde
C)  Ortho and para-(hydroxymethyl) phenol
D)  Meta-(hydroxymethyl) phenolE) B) and C)
F) A) and D)

Question 4

What is the name given to polymers with two or more different monomers?

Accepted Answer

A)  Homopolymers
B)  Copolymers
C)  Block polymers
D)  Random polymersE) A) and D)
F) A) and C)

Question 5

Vulcanization is the process of cross-linking polymer chains in rubber using what chemical?

Accepted Answer

A)  Sulfur
B)  Formaldehyde
C)  Benzoyl peroxide
D)  Ethylene glycolE) None of the above
F) A) and D)

Exam 28: Synthetic Polymers

Vulcanization is the process of cross-linking polymer chains in rubber using what chemical?

Correct Answer
verified

Melamine and formaldehyde combine to form the polymer,Melmac^®.How is Melmac^® classified,and what physical characteristics are consistent with its structure?

Correct Answer
verified

What is the name given to polymers with two or more different monomers?

Correct Answer
verified

What is the classification of the following polymer in which X and Y represent repeating units?

Correct Answer
verified

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde.What is (are) the product(s) of the first step in this polymerization,shown below? (Note: in the answers below the hydroxymethyl group is -CH₂OH.)

Correct Answer
verified

Exam 28: Synthetic Polymers

Vulcanization is the process of cross-linking polymer chains in rubber using what chemical?

Correct AnswerverifiedShow Answer

Melamine and formaldehyde combine to form the polymer,Melmac®.How is Melmac® classified,and what physical characteristics are consistent with its structure?

Correct AnswerverifiedShow Answer

What is the name given to polymers with two or more different monomers?

Correct AnswerverifiedShow Answer

What is the classification of the following polymer in which X and Y represent repeating units?

Correct AnswerverifiedShow Answer

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde.What is (are) the product(s) of the first step in this polymerization,shown below? (Note: in the answers below the hydroxymethyl group is -CH2OH.)

Correct AnswerverifiedShow Answer

Correct Answer
verified

Melamine and formaldehyde combine to form the polymer,Melmac^®.How is Melmac^® classified,and what physical characteristics are consistent with its structure?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde.What is (are) the product(s) of the first step in this polymerization,shown below? (Note: in the answers below the hydroxymethyl group is -CH₂OH.)

Correct Answer
verified