Chemistry unit 1

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Across
  1. 2. Can be stretched into shape
  2. 5. A metal that is between Zinc and Aluminium on the reactivity series
  3. 7. Common name for a polymer used for plastic bags
  4. 9. Acid in your stomach that kills bacteria that may be on your food
  5. 12. Type of rock that is mainly calcium carbonate
  6. 15. Fuel for aircraft engines
  7. 17. The only metal that can rust
  8. 19. A fuel made from vegetable oils
  9. 20. A mixture of two metals or a metal and a non-metal
  10. 21. Unsaturated hydrocarbon
  11. 22. Thick and sticky, used in describing crude oil
Down
  1. 1. The process in which oxygen is removed from a compound
  2. 3. Common name for calcium hydroxide solution
  3. 4. A mixture of different hydrocarbon molecules found naturally underground
  4. 6. Type of rocks formed by cooling magma/lava
  5. 7. The process that helps remove carbon dioxide from the atmosphere
  6. 8. Metal that is used to make electrical cables
  7. 10. The most abundant gas in the current atmosphere
  8. 11. Process where crude oil is seperated into its fractions
  9. 13. can be hammered into shape
  10. 14. A solid substance formed during incomplete combustion
  11. 16. Fuels obtained from organisms
  12. 18. A base dissolved in water