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Read the text carefully twice.



Now answer the following questions.


  1.  Why are many thousands of hydrocarbon compounds possible?
  2.  How is crude oil brought to the surface?
  3.  What 3 light oils are listed in the text?
  4.  What are petroleum products measured in?
  5. What do they call chemicals that are found in union with hydrocarbon?


Home learners please could you take a photo of your answered questions and email it to Mr Hindman on Purple Mash.