Addition polymers

• What are addition polymers made from?

  Unsaturated monomers
• How are addition polymers formed?

  By joining lots of little molecules together
• What are the characteristics of addition polymers?

  • Made from unsaturated monomers
  • Formed by joining small repeating units
  • Have a double covalent bond in monomers
• What type of bond do the monomers in addition polymers have?

  Double covalent bond
• What happens to the double bonds in unsaturated monomers during polymerization?

  They open up to form polymer chains
• What is the process of forming polymer chains from unsaturated monomers called?

  • Addition polymerization
  • Involves opening double bonds
  • Joins monomers into long chains
• What is the significance of the term "poly" in polymers?

  It means many
• How do addition polymers differ from other types of polymers?

  They are formed from unsaturated monomers
• What are the steps involved in drawing the structure of an addition polymer?

  1. Identify the monomer structure
  2. Open the double bond
  3. Repeat the unit to form a chain
  4. Add brackets and 'n' to indicate repetition
• What is the formula for the repeating unit of an addition polymer made from ethene?

  (C₂H₄)n
• If you have a polymer made from ethene, what is its general formula?

  (C₂H₄)n
• What is the significance of drawing brackets around the monomer in polymer notation?

  • Indicates the repeating unit
  • Shows the structure of the monomer
  • 'n' denotes the number of repetitions
• What is the role of brackets in the formula of a polymer?

  To indicate the repeating unit
• Why is it important to include 'n' in the polymer formula?

  It indicates the number of repeating units
• How do you represent a polymer made from two carbon atoms in its monomer?

  • Use (C₂H₄)n
  • Indicate the repeating unit
  • Include 'n' for repetitions
• What is the simplest addition polymer?

  Polyethylene
• How can you visualize the structure of an addition polymer?

  By drawing the repeating unit in a chain
• What is the importance of understanding addition polymers in chemistry?

  • Helps in material science
  • Essential for polymer chemistry
  • Relevant for industrial applications
• What type of bond is present in a linear alkane with no double bonds?

  Single bonds
• What is the purpose of drawing a pair of brackets around the repeating bit in a polymer?

  To indicate the repeating unit in the chain
• How do you represent a polymer's structure using brackets?

  By enclosing the repeating unit in brackets
• What does drawing a bond from each carbon in the chain show?

  It indicates the chain continues through the brackets
• What is the first step to derive the displayed formula of a polymer from a monomer?

  Reverse the displayed formula of the monomer
• What happens to the bonds when deriving the polymer from the monomer?

  Two bonds going out through the brackets are removed
• How do you represent a double bond in a polymer structure?

  By using a double line between carbon atoms
• What are the properties of polymers that make them suitable for different uses?

  • Each polymer has its own set of properties
  • Properties depend on the arrangement of polymer chains
  • Forces between chains influence the characteristics
• What is a common use for poly(propene)?

  Making strong and tough products
• What is a characteristic of poly(chloroethene)?

  It is tough and cheap
• What is the use of poly(tetrafluoroethene)?

  Used in non-stick coatings
• How do the properties of poly(ethene) differ from poly(propene)?

  Poly(ethene) is more flexible than poly(propene)
• What is a property of poly(vinyl chloride)?

  It is tough and cheap
• What is the significance of the arrangement of polymer chains?

  It determines the physical properties of the polymer
• How do the forces between polymer chains affect their properties?

  They influence strength, flexibility, and toughness
• What is the property of poly(propene) that makes it suitable for certain applications?

  It is strong and tough
• Why is poly(chloroethene) commonly used in construction?

  Due to its toughness and low cost
• How does the flexibility of poly(ethene) benefit its applications?

  It allows for easy shaping and molding
• What is a common application of poly(tetrafluoroethene)?

  Non-stick frying pans
• What is the role of polymer properties in product design?

  They dictate the suitability for specific uses
• How do the properties of polymers influence their manufacturing processes?

  Different properties require different processing techniques
• What are the characteristics of poly(propene) that make it suitable for various applications?

  • Strong and tough
  • Resistant to impact
  • Suitable for containers and packaging