Petroleum and its Products

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Across
  1. 3. An organic compound consists of 4 hydrogen atoms and 1 carbon atoms that makes up most of natural gas
  2. 5. … is a measure of how easily a substance will vaporize (turn into a gas or vapor)
  3. 6. The top fraction obtained from petroleum separation, has the boiling point of < 25°C and number of carbon ranges from C1-C4
  4. 9. The fraction obtained from petroleum separation used to make waxes and polishes, has the boiling point of 300 °C - 350 °C and number of carbon ranges from C20 - C40
  5. 11. A measure of a fluid's resistance to flow, as what caused honey flows slower than water
  6. 12. The boiling point of fractions obtained from crude oil separation decreases from bottom to top.
Down
  1. 1. … cracking is the process when longer chain hydrocarbon molecules are broken up into shorter ones
  2. 2. … oil is the fraction used to power ships and heating in households
  3. 4. … is made from bitumen fraction, used for surfacing roads
  4. 7. The type of distillation used to separate petroleum at an oil refinery
  5. 8. Oil and natural gas are both made of small … decomposition over millions of years
  6. 10. The third fraction from the top obtained from petroleum separation that is used to make raw material in the chemical industry