dissolving and water purification

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Across
  1. 2. a phenomenon which describes the mixing of a solid and a liquid together until the solids disappear in the liquid
  2. 4. a water purification method that can remove small insoluble impurities
  3. 7. a water purification method that can remove all kinds of impurities
  4. 9. the term to describe the impurities left on the filter paper
  5. 11. the name of the liquid that passes out after filtration
  6. 13. a term to describe the amount of solutes that can be dissolved in a certain amount of solvent
  7. 14. seawater is an example of _____?
  8. 15. oxygen is soluble in water so oxygen is the ______ ?
  9. 16. a phenomenon where extra solutes form a large 'solid' in a saturated solution
Down
  1. 1. the name of the process that shows the change of solid to liquid
  2. 3. a type of solution in which no more solute is dissolved
  3. 5. MSG is an example of _________ impurities
  4. 6. a kind of impurities that may cause disease
  5. 8. oil is an example of _________ impurities
  6. 10. a water purification method that can only remove large and heavy insoluble impurities
  7. 12. oil can dissolve make-ups so oil is the ______?