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Across
  1. 3. Property depending on number, not kind, of particles
  2. 4. Separation based on movement through medium
  3. 8. Mixture boiling at constant composition
  4. 9. Binding metal ions to prevent reaction
  5. 10. Pouring off liquid from settled solid
  6. 12. Process swapping ions in solution
  7. 14. Separation of solid from liquid
  8. 16. Purification by dissolving and re-forming crystals
  9. 17. Direct conversion from solid to gas
  10. 19. Leading edge of solvent in chromatography
  11. 20. Process of liquid turning into vapor
Down
  1. 1. Separation by spinning at high speed
  2. 2. Separation by boiling point differences
  3. 5. Adherence of molecules to surface
  4. 6. Contains calcium and magnesium ions
  5. 7. Removing ions causing hardness
  6. 11. Distribution of solute between phases
  7. 13. Gas changing into liquid
  8. 15. Removing substance from mixture using solvent
  9. 18. Separation of mixture into component parts