1 / 12

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.

vonda
Télécharger la présentation

solutions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related