Crude oils and fuels

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Across
  1. 3. the sequence of events in distillation
  2. 4. a process that can be used to separate a pure liquid from a mixture of liquids.
  3. 5. a mixture of compounds called hydrocarbons
  4. 6. alkanes general formula
Down
  1. 1. separates a mixture into a number of different parts, called fractions
  2. 2. saturated hydrocarbons