Polymer Basics: Nomenclature and Structure
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Questions and Answers

What process is involved in linking monomers together to form a polymer?

  • Addition reaction
  • Condensation
  • Biopolymerization
  • Polymerization (correct)

What type of polymer is synthesized by scientists?

  • Condensation polymers
  • Biopolymers
  • Addition polymers
  • Synthetic polymers (correct)

What type of polymer is prepared from alkenes through addition reactions?

  • Synthetic polymers
  • Condensation polymers
  • Addition polymers (correct)
  • Biopolymers

How are polymer formulas typically written?

<p>By enclosing the repeating unit within brackets, followed by the letter n (B)</p> Signup and view all the answers

What is the name of the polymer commonly known as Teflon?

<p>Polytetrafluoroethylene (B)</p> Signup and view all the answers

What is the term for polymers synthesized by cells?

<p>Biopolymers (A)</p> Signup and view all the answers

What is the characteristic of polymer chains in crystalline regions?

<p>Highly ordered (C)</p> Signup and view all the answers

What is the effect of substituents or branches on the density of a polymer?

<p>It reduces the density (B)</p> Signup and view all the answers

What is the characteristic of thermoplastic polymers?

<p>They have both crystalline and amorphous regions (C)</p> Signup and view all the answers

What is the reason why thermosetting polymers cannot be remelted?

<p>Because of their covalent cross-links (B)</p> Signup and view all the answers

What is the characteristic of elastomers?

<p>They are flexible and can be stretched (B)</p> Signup and view all the answers

What happens to thermoplastic polymers when they are heated?

<p>They become softer and can be molded (D)</p> Signup and view all the answers

What is the characteristic of a chain-growth process?

<p>Monomers add one-by-one to the same end of a growing chain (A)</p> Signup and view all the answers

What type of polymerization is associated with step growth?

<p>Condensation polymerization (A)</p> Signup and view all the answers

What is the name given to regions of a polymer where the chains are highly ordered with respect to one another?

<p>Crystallites (C)</p> Signup and view all the answers

What is the primary force that holds individual chains of a polymer together?

<p>Van der Waals forces (B)</p> Signup and view all the answers

What is the characteristic of a cross-linked polymer?

<p>It has covalently bonded linking units between chains (A)</p> Signup and view all the answers

What is the term for polymers of intermediate length formed during step growth?

<p>Oligomers (C)</p> Signup and view all the answers

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