Periodic table

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Across
  1. 2. method to separate compounds
  2. 5. neutral particles made up of two or more atoms
  3. 6. O
  4. 7. consists of proton, neutrons and electrons
  5. 8. chemical name for gold
  6. 10. inert gas, proton number 86
  7. 12. simplest form of substance
  8. 14. use to make fireworks
  9. 15. identify any harmful food colouring
  10. 16. metal with relative atomic mass of 39
  11. 17. particle with negative charge
Down
  1. 1. used to separate a liquid and insoluble solid mixture
  2. 3. discover by Glenn Seaborg in 1974
  3. 4. consists of two or more elements combined chemically
  4. 5. consists two or more elements or compounds mixed physically
  5. 8. shiny metal
  6. 9. strong and rust proof type of metal
  7. 11. F
  8. 13. Kr
  9. 14. semi metal, proton number 14