Across
- 2. light gases from crude oil used as fuel
- 3. fuel used in diesel engines
- 8. fraction used as aircraft fuel
- 12. crude oil formed from ancient organic matter
- 13. compound containing only carbon and hydrogen
- 16. smallest unit of a compound that retains its properties
- 18. process used to separate liquids by boiling point
- 20. separation of crude oil into useful fractions
- 21. point temperature at which a liquid becomes a gas
- 22. process that breaks long hydrocarbons into shorter ones
Down
- 1. industrial plant where crude oil is processed
- 4. mixture of hydrocarbons with similar boiling points
- 5. fuel fraction used in car engines
- 6. change of gas into a liquid
- 7. process where liquid particles escape to form a gas
- 9. tendency of a liquid to evaporate easily
- 10. resistance of a liquid to flow
- 11. oil used to reduce friction in machinery
- 14. thick fraction used for road surfacing
- 15. tall tower where fractional distillation occurs
- 17. series of carbon atoms linked together in a hydrocarbon
- 19. gaseous form of a substance produced by heating