Chapter 21 Polymers

Subdecks (3)

Cards (21)

  • Polymers
    • polymers are large organic molecules made up of many small molecules called monomers which are joined together by covalent bonds
    • polymers can be natural or synthetic
    • natural polymers include starch, proteins and nucleic acids
    • synthetic polymers include poly(ethene), nylon and Terylene
    • polymerisation is the process that occurs when many monomers join together to form a polymer (addition polymerisation and condensation polymerisation)
  • Repeat units
    • repeat units are similar units found within the structure of a polymer
  • Macromolecules
    • type of Covalent substance
    • polymers are macromolecules that are made up of many covalent molecules joined together in long chains
    • polymers do not have fixed melting and boiling point since they have macromolecular structures and held together by intermolecular forces of attraction (strength depends on size)
    • do not conduct electricity since ethere are no electrons or ions available to act as mobile charge carriers
    • insoluble in water and soluble in organic solvents