Chemistry

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Across
  1. 2. The name of the element that has the highest electro-conductivity
  2. 4. The scientist, who invented the Periodical table
  3. 5. It increases a reaction speed
  4. 8. Metal which is closely connected with the blood
  5. 11. Gas which is used to make someone sleep
  6. 12. The layer which save our skin from UV
  7. 13. How many sub-groups do we have in one periodical group
  8. 14. The state of an percipitate
Down
  1. 1. The name of chemistry teacher who became a head teacher
  2. 3. is losing
  3. 6. CnH2n+2
  4. 7. All points in Summative Assesment
  5. 9. Cations and anions are
  6. 10. What type of pH does water have?
  7. 15. What is an amount of carbon dioxide in the air?