Alkenes

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Across
  1. 1. organic compound containing one or more double of triple bonds.
  2. 4. This is used as a catalyst in addition polymerisation.
  3. 6. Has positive or slightly positive charge, attacks electron rich areas.
  4. 8. (t = about 60 pressure = low)- conditions of ____ density poly(ethene).
  5. 9. Small molecules that join together to make polymers.
Down
  1. 2. The process by which polyethene and other polymers is made is called _______ polymerisation.
  2. 3. step of addition polymerisation in which 2 free radicals are forming final molecules.
  3. 5. Long chain molecule made from lots of small molecules joined together.
  4. 7. (t = about 200 pressure = about 2000 atm)- conditions of ____ density poly(ethene).