Mixtures pp

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Mixtures pp

  1. 1. MIXTURES
  2. 2. MIXTURES <ul><li>Not chemically bonded- can be separated </li></ul><ul><li>Any proportion of substances </li></ul><ul><li>The substances keep their own properties </li></ul><ul><li>2 or more elements, compounds, or both </li></ul><ul><li>Any combination(s) of solids, liquids, or gases </li></ul>
  3. 3. Solutions <ul><li>Solutions are Homogeneous mixtures- mixed so evenly you can not see the different parts </li></ul><ul><li>solutions are Not always liquids </li></ul><ul><li>Air is a gas solution of N2, o2 and other gases </li></ul><ul><li>Brass is a solid solution of copper and zinc </li></ul>
  4. 4. Liquid Solutions <ul><li>A solid dissolved in a liquid mixture </li></ul><ul><ul><li>(salt Water solution) </li></ul></ul><ul><li>Liquid is the solvent (Water) </li></ul><ul><li>Solid is the solute (salt) </li></ul><ul><li>A solid that dissolves easily is soluble </li></ul><ul><li>A solid that doesn’t dissolve is insoluble </li></ul>
  5. 5. Saturated Solution <ul><li>a solution in which No more solute will dissolve </li></ul>
  6. 6. Suspension <ul><li>A Mixture of solid particles floating in a liquid or gas </li></ul><ul><ul><li>Milk </li></ul></ul>
  7. 7. Miscible liquids <ul><li>Liquids that mix easily are called miscible </li></ul>
  8. 8. Immiscible liquids <ul><li>Liquids that do not mix easily are called immiscible (oil and H 2 O) </li></ul><ul><ul><li>Can be mixed together by adding an emulsifier </li></ul></ul><ul><ul><ul><li>1 liquid break up into minute drops </li></ul></ul></ul><ul><ul><ul><ul><li>The end product is called an emulsion </li></ul></ul></ul></ul><ul><li>Example mayo emulsion oil and vinegar, egg yolk is the emulsifier </li></ul>
  9. 9. Separating Mixtures <ul><li>Method chosen depends on physical properties </li></ul><ul><li>6 additional methods </li></ul>
  10. 10. Separating Mixtures <ul><li>Decantation – solid insoluble particles from a liquid (set, particles settle and pour off liquid) </li></ul>
  11. 11. Separating Mixtures <ul><li>2. Filtration – solid insoluble particles from a liquid </li></ul>
  12. 12. Separating Mixtures <ul><li>3. Chromatography – analyze the substances in a liquid in a chromatogram (dissolve most easily travel the furthest) </li></ul>
  13. 13. Separating Mixtures <ul><li>Distillation – a way of obtaining a pure solvent from a solution </li></ul><ul><li>(boil, evaporation : steam, cooled : condenses, </li></ul><ul><li> solvent is collected in another vessel) </li></ul>
  14. 14. Separating Mixtures <ul><li>Evaporation – Separating a soluble solid from a solvent </li></ul>
  15. 15. Separating Mixtures <ul><li>Centrifuging – solid particles from a suspension </li></ul><ul><li> ( liquid spun very quickly in a centrifuge pushes particles to sides and liquid can poured or filtered off) </li></ul>

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