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solutions

solutions. mixtures. heterogeneous. homogeneous. Suspension. Colloid. Solution. Solution : substances mixed so thoroughly that at the level of particles no clusters of particles of the original compounds exist . ✗. ?. Properties of solutions. Solution. transparent.

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solutions

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  1. solutions

  2. mixtures heterogeneous homogeneous Suspension Colloid Solution Solution: substances mixed so thoroughly that at the level of particles no clusters of particles of the original compounds exist ✗ ?

  3. Properties of solutions Solution transparent Even under magnifying instrument impossible to distinguish the different components

  4. Solute and solvent Solute: substance that dissolves in another substance Solution solid liquid gas Solvent: can dissolve a solute solid liquid gas

  5. Different kinds of solutions

  6. Properties of solutions • What is the difference?  watch: the concentration

  7. How can we quantify? • Lots of solute  concentration increases • Lots of solvent  concentration decreases

  8. Define a formula that will produce a big value when the concentration is high and a small value when the concentration is low. • Use the amount of solute and the amount of final solution in your formula. amount solute amount solution Concentration: c =

  9. How to prepare a solution • Measure amount of solute • Dilute in small amount of solvent • Adjust final volume to desired amount • DON’T START BY MEASURING THE FINAL VOLUME OF SOLVENT!

  10. Different ways to express concentration: • Number of grams of solute per litre of solution (g/L) • Number of grams of solute per 100 ml of solution (%mass /volume =%m/V) • Number of millilitres of solute per 100 ml of solution (% volume/volume =%V/V) • Number of grams of solute per 100 grams of solution (% mass/ mass =%m/m) amount solute amount solution c =

  11. Examples To boil your pasta you add 1 teaspoon of salt (= 5g of salt) to 2L of water.  what is the concentration of the saltwater solution? m mass of solute c = c = V volume solution 5g amount solute c = = 2.5 g/L 2L amount solution c =

  12. worksheet

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