5

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Across
  1. 2. Separation by attraction
  2. 3. Maximum solute dissolved
  3. 5. Bond formed by electron transfer
  4. 6. Relating to atoms
  5. 8. Separation using a filter
  6. 9. Physical blend of substances
  7. 11. Regions where electrons may be found
  8. 12. Change without altering composition
  9. 14. Ability to dissolve in solvent
  10. 16. High concentration solution
  11. 21. Sum of protons and neutrons
  12. 22. Contains other substances
  13. 23. Same formula, different structure
  14. 24. Can dissolve more solute
  15. 25. Low concentration solution
Down
  1. 1. Any substance with defined composition
  2. 4. Separation by boiling point
  3. 7. Change forming new substances
  4. 10. Equal sharing of electrons
  5. 13. Not mixed with anything else
  6. 15. Unequal sharing of electrons
  7. 17. Substance of bonded atoms
  8. 18. Bond formed by sharing electrons
  9. 19. Simplest chemical substance
  10. 20. Contains excess solute