Unit 7: Polymers Quiz
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Questions and Answers

What is the term used to describe a large molecule composed of repeating small molecule units?

  • Oligomer
  • Polymer (correct)
  • Isomer
  • Monomer

Which Greek words were used to derive the term 'polymer'?

  • Mono and Poly
  • Pol and Meridian
  • Poly and Meros (correct)
  • Poly and Merit

Which term represents the number of repeating monomer units in a polymer's chemical structure?

  • Polymerase
  • $n$ (correct)
  • R
  • Nucleotide

What is the small molecule precursor or building block of polymers called?

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

What is the most common application of polyethylene?

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

What does the chemical structure of polymers typically represent?

<p>The monomer enclosed in a parenthesis (A)</p> Signup and view all the answers

Which type of polymerization process involves a straightforward linking together of monomer units, with no loss or gain of material?

<p>Addition polymerization (D)</p> Signup and view all the answers

Which polymer is denser, stiffer, and harder than polyethene due to the added methyl groups?

<p>Polypropene (D)</p> Signup and view all the answers

Which type of polymers are formed by linking together of bifunctional polymers to give polymer and some small molecules, such as water?

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

Which type of polymer can be melted and reshaped by applying heat and pressure due to chains interacting only through intermolecular force?

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

What type of polymers can be used in making flexible bottles, packaging, toys, films, sheets, and insulation for electric wires?

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

Which polymer is formed from monomer units vinyl chloride and used in pipes, floorings, garden hoses, and raincoat?

<p>Polyvinylchloride (PVC) (D)</p> Signup and view all the answers

Which polymer is formed via condensation reaction between diol and diacids, producing water as a by-product?

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

Which polymers are produced via addition polymerization?

<p>Polyethene and Polyvinylchloride (PVC) (B)</p> Signup and view all the answers

Which polymers are produced via condensation polymerization?

<p>Polyamide (nylon) and Polyethylene Terephthalate (D)</p> Signup and view all the answers

Which class of polymers involves the linking of monomer units with no loss or gain of material?

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

Flashcards

Polymer

A large molecule made of repeating small units called monomers.

Monomer

The small molecule that serves as a building block for polymers.

$n$ (number of repeating units)

Represents the number of repeating monomer units in a polymer.

Addition polymerization

Polymerization process where monomers link without loss or gain of material.

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Condensation polymers

Formed by linking bifunctional monomers, releasing small molecules like water.

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Thermoplastics

Polymers that can be melted and reshaped by heat and pressure.

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Polyethene

A polymer used for flexible bottles, packaging, and insulation.

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Polyvinylchloride (PVC)

A polymer made from vinyl chloride, used in pipes and flooring.

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Polypropene

A denser, stiffer polymer than polyethene, with added methyl groups.

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Polyester

A polymer formed from diols and diacids, with water as a by-product.

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Polyamide (nylon)

A polymer produced via condensation polymerization; known for strength.

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Polyethylene Terephthalate (PET)

A polymer produced via condensation used in bottles and textiles.

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Intermolecular forces

Forces that allow thermoplastics to be reshaped without chemical change.

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Bifunctional polymers

Polymers that have two reactive groups for forming condensation bonds.

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Food packaging

A common application of polyethylene for keeping food fresh.

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Chemical structure of polymers

Typically shows the monomer units enclosed in parentheses.

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Study Notes

Polymers

  • A large molecule composed of repeating small molecule units is called a polymer.
  • The term "polymer" is derived from the Greek words "poly" meaning many and "meros" meaning part.
  • The degree of polymerization (DP) represents the number of repeating monomer units in a polymer's chemical structure.
  • The small molecule precursor or building block of polymers is called a monomer.
  • The chemical structure of polymers typically represents a chain of repeating monomer units.

Types of Polymers

  • Polyethylene is a type of polymer with a wide range of applications, including packaging, plastic bags, and insulation.
  • Polypropylene is a type of polymer that is denser, stiffer, and harder than polyethylene due to the added methyl groups.
  • Thermoplastic polymers can be melted and reshaped by applying heat and pressure due to chains interacting only through intermolecular forces.
  • Polyvinyl chloride (PVC) is a type of polymer formed from monomer units vinyl chloride and is used in pipes, floorings, garden hoses, and raincoats.

Polymerization Processes

  • Addition polymerization is a type of polymerization process that involves the linking of monomer units with no loss or gain of material.
  • Condensation polymerization is a type of polymerization process that involves the linking of bifunctional polymers to give polymer and some small molecules, such as water.
  • Polyesters are a type of polymer formed via condensation reaction between diol and diacids, producing water as a by-product.

Properties and Applications

  • Thermoplastic polymers are used in making flexible bottles, packaging, toys, films, sheets, and insulation for electric wires.
  • Polymers produced via addition polymerization include polyethylene and polypropylene.
  • Polymers produced via condensation polymerization include polyesters and polyamides.
  • Condensation polymers are a class of polymers that involve the linking of monomer units with no loss or gain of material.

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Test your knowledge of polymers with this quiz covering the definition of polymers, different types of polymers, recycling codes for plastics, and examples of polymers and their applications.

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