breaking down hydrocarbons

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Across
  1. 2. This is a fuel that is used in cars and is made from crude oil
  2. 4. This gas can be used in cars
  3. 5. This means that the chain they contain at least one double bonded carbon.
  4. 7. Aluminium oxide is an example of a_________. It speeds up reactions.
  5. 9. What process describes hydrocarbons being break up hydrocarbons.
Down
  1. 1. This hydrocarbon has single bonds and is used for fuels
  2. 3. These bonds are found in hydrocarbon.
  3. 6. This this means that the that there are only single bonds in the hydrocarbons
  4. 8. This is used to make polymers like polythene