Periodic table

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