Cracking

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Across
  1. 2. this is the most in demand fraction
  2. 3. this increases as the chain length increases
  3. 4. this is used in cracking to speed up the reaction
  4. 5. this is a mioxture of different length hydrocarbons
  5. 6. this decreases as you move up the fractionating column
  6. 8. this is when long chains are broken down into smaller more useful chains
Down
  1. 1. this the process that seperates crude oil into different fractions
  2. 7. this fraction has the largest boiling point