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Across 1. a solution with a pH above 7 3. greatest solvent in the world 4. when a base and an acid are mixed, the hydroxide ion from the base combines with the hydrogen ion from the acid to form water 7. a slight negative charge a one end of a molecule, a slight positive charge at he other end 8. indicates the concentration of hydrogen ions in a solution 11. an example of a base 14. in which water is the solvent 16. chemical substances that neutralize small amounts either an acid or base 18. a substance in which a solute is dissolved 19. a hydrogen ion attaches to the oxygen atom of a second, un-ionized water molecule 21. attraction between molecules of the same substance 22. mixture of water and nondissolved substances that are so small they do not settle out

Down 1. any compound that forms hydrogen or hydronium ions in a solution 2. some atoms can gain or lose electrons to form ions 3. one of the hydrogen nuclei leaves its electrons behind wit the oxygen atom to become a hydrogen ion 5. process of ions separating from one another when dissolved in water 6. table salt 9. mixture of two or more substances in which he molecules are evenly mixed 10. a solution that contains more hydroxide ions than hydronium ions 12. compounds formed by ionization 13. effect of water rising in a narrow tube against gravity 15. a negatively charged ion consisting of of on oxygen atom an one hydrogen atom 17. attraction between molecules of different substances 18. substance that is dissolved 20. material composed of two or more elements or compounds that are physically mixed together but not chemically combined