periodic table

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Across
  1. 3. gases that are not reactive
  2. 6. metals that form variable changes
  3. 10. first person to arrange a table of elements
  4. 11. mixture that separates liquid from solid with a porous barrier
  5. 13. metals that are very reactive
Down
  1. 1. separation method that forms pure solid particles
  2. 2. nonmetals that form diatomic molecules
  3. 4. separation method on the basis of a substance's ability to travel across the surface of another material
  4. 5. arranged the table by atomic numbers
  5. 7. metals that are pretty reactive
  6. 8. separation method based on different boiling points
  7. 9. horizontal rows
  8. 12. vertical columns