C1.5 - Products from Oil

View mindmap
  • C1.5 - Products from Oil
    • 5.1
      • Hydrocarbon molecules can be broken down by heating them with steam to a very high temperature or by passing their vapours over a hot catalyst.
      • Cracking produces alkanes and alkenes.
      • Alkenes are unsaturated hydrocarbons.
      • Alkenes turn bromine water from orange to colourless.
    • 5.2
      • Plastics are made of polymers.
      • Polymers are large molecules made when many small molecules (monomers) join together.
      • Alkanes can be used to make polymers such as poly(ethene) and poly(propene)
    • 5.3
      • New polymers are being developed all the time.
      • Polymers are designed to have properties that make them specially suited for certain uses.
      • We are now recycling more plastics and finding new uses for them.
    • 5.4
      • Non-biodegradab-le plastics cause unsightly rubbish, can harm wildlife and take up space in landfill sites.
      • Biodegradab-le plastics are decomposed by the action of microorganis-ms in soil.
      • Making plastics with starch granules in their structure helps the microorganis-ms break down a plastic.
      • We can make biodegradab-le plastics from plant materials like cornstarch.
    • 5.5
      • Ethanol can be made by fermenting sugar using enzymes in yeast.
      • Ethanol can also be made by hydration of ethene with steam in the presence of a catalyst.
      • Using ethene to make ethanol needs non-renewable crude oil whereas fermentation uses renewable plant material.


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Paints and oils resources »