Chem 2 Crossword

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Across
  1. 5. A chemical containing hydrogens and carbon only.
  2. 7. A chemical that follows the pattern CnH2n.
  3. 8. A process that removes solids from liquids
  4. 9. The source of the Earth's first atmosphere.
  5. 14. A measure of how thick a liquid is.
  6. 15. Water that is safe to drink.
  7. 17. A chemical used for testing for C=C bonds.
  8. 18. A chemical that follows the pattern CnH2n+2.
  9. 20. A greenhouse gas with the equation CH4.
  10. 21. A reaction that breaks down long hydrocarbons to shorter ones.
Down
  1. 1. A way to reduce the amount of waste going to landfill.
  2. 2. The process that removes salt from water.
  3. 3. The type of fuel formed frmo ancient organisms.
  4. 4. The type of distillation used to separate crude oil.
  5. 6. The process performed by plants that removes CO2 from the atmosphere.
  6. 10. A chemical with the formula C3H8.
  7. 11. A chemical used to sterilise water.
  8. 12. A rock formed from CO2 that was dissolved in oceans.
  9. 13. The process that kills microorganisms in water supplys.
  10. 16. A chemical with the formula C4H8.
  11. 19. The type of waste that humans pollute water systes with.