chemistry 2

chemistry 2

1. polymer

   • polymer molecules are very large compared to other molecules. some are made via condensation polymerisation, in this a small molecule is formed by- product each time a bond is formed between molecules. this small molecule is often water.
     • the polymer molecules are very large made with many saller molecules joined together, end to end. the smaller molecules are called moomers.
   • an example of a condensation polymer is NYLON
   • what are polymers
     • they are long chain molecules that occur naturally in living things and can be made by chemical processes in industry. plastics are polymers and therefore they can be very useful.
       • different polymers have different uses
         • poly(ethene) = is plastic bages and bottles.
           • poly(propene) =creates and ropes
             • poly(chloroethene) = water piper and insulation on electricity cables.
   • poly= many mers= small units
   • natural polymers
     • cotton silk wool rubber fur and paper
       • latex is a natural polymer hat can be tapped out from rubber trees
   • synthetic polymers
     • polythene polypropylene polyester pvc pet
   • a polymer structure must be ridge and strong

2. thread

   • what types of thread are there
     • cotton linen fusible silk wool polyester rayon nylon water-soluble metallics

3. crude oil

   • Fractional Distillation is used to seperate crude oil