Mr Brown's Christmas Crossword

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Across
  1. 7. Discovered the electron
  2. 8. Separating technique with the steps, Evaporation, Condensations and Collections
  3. 9. A large repeating structure
  4. 11. Left gaps in the period table for undiscovered elements
  5. 12. A mixture with an exact recipe for a specific purpose
  6. 15. Scientific work for mixable
  7. 16. How we describe electrons in metallic bonding
  8. 17. Metals can be bent into shape because they have this property
  9. 19. The best chemistry teacher.
  10. 21. Who formed the law of triads?
  11. 22. Attraction between a positive and negative charges?
Down
  1. 1. A row in the period table is called
  2. 2. The table on page 86 of your planner
  3. 3. Makes a sound when hit
  4. 4. A bond with a shared pair of electrons
  5. 5. How we describe the solvent phase in chromotography
  6. 6. Developed the nuclear model of the atom using the gold foil experiment
  7. 10. The formular with the simplest ratio of elements
  8. 13. Two or more different elements chemically bonded
  9. 14. Elements with the same number of protons and different number of neutrons
  10. 18. Shiny or glimmering, like gold
  11. 20. Who discovered the law of octaves?