Chemistry Revision

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Across
  1. 3. The _______________ number is the number
  2. 8. The type of ion resent in acids
  3. 9. The type of reaction which occurs when a
  4. 11. protons
  5. 15. formula but different displayed
  6. 16. The type of bonding between a metal and a
  7. 17. reactive metal displaces a less
  8. 18. The most abundant gas in the Earth's atmosphere
  9. 20. column
  10. 21. The homologous series with the general
Down
  1. 1. metal from a compound
  2. 2. The process of coating iron with zinc
  3. 4. A form of an element with the same number of protons but a different number of
  4. 5. The gain of electrons
  5. 6. The unit for the amount of a substance
  6. 7. An organic substance with the same
  7. 8. The type of ion present in alkalis
  8. 10. The state change when a gas turns into a liquid
  9. 12. CnH2n
  10. 13. metal
  11. 14. The fraction at the bottom of the
  12. 19. The colour of copper carbonate