Edexcel IGCSE Chemistry Synthetic Polymer

ADDITION POLYMERIZATION

  • The individuals unit that polymerizes to form a polymers is known as a monomers. Eg Ethene
  • The structure formed by the polymerization of the monomer is a polymers.

Polymers are materials made by linking up smaller repeating chemical units.

Some bend and stretch – rubber and polyester.

Some hard and tough – epoxies and glass.

ADDITION POLYMERS

  1. a) Formed by addition reaction.
  2. b) Require only one monomer generally an alkene
  3. c) Nothing is lost in the reaction.

eg Polyethene, polypropene

CONDENSATION POLYMERS

  1. a) Requires two monomers
  2. b) Requires two functional group
  3. c) Formed by condensation reaction.
  4. d) A small molecule of water is
  5. e) Example: Nylon a polyester

Synthetic Polymer

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NATURAL POLYMERS

  1. a) They are found naturally
  2. b) All the complex biomolecules are polymers
MonomerPolymer
GlucoseStarch
ProteinsAmino Acid
NucleotideDNA

 DNA

  1. a) DNA is polynucleotide
  2. b) Nucleotide = Phosphate + Sugar + Nitrogenous Bases
  3. c) There are four bases present in the DNA
  • Adenine
  • Thymine
  • Guanine
  • Cytosine

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References:

BBC Bitesize

Wikipedia

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