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</p> Signup and view all the answers

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

    <p>Polytetrafluoroethylene</p> Signup and view all the answers

    What is the term for polymers synthesized by cells?

    <p>Biopolymers</p> Signup and view all the answers

    What is the characteristic of polymer chains in crystalline regions?

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

    What is the characteristic of thermoplastic polymers?

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

    What is the reason why thermosetting polymers cannot be remelted?

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

    What is the characteristic of elastomers?

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

    What happens to thermoplastic polymers when they are heated?

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

    What type of polymerization is associated with step growth?

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

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

    <p>Oligomers</p> Signup and view all the answers

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