Agenda  Explore methods of separation  Notes on methods of separation.

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Presentation transcript:

Agenda  Explore methods of separation  Notes on methods of separation

 Four methods of separation are set up around the room.  Observe the physical properties before and after.  Determine states of matter separated  Determine properties used to separate

Date:

 Distillation – separate liquids by boiling points. ◦ One boils at a lower temperature allowing it to be trapped and condensed. ◦ Occurs with oil and gasoline

 Chromatography – separate particles by their ability to travel with a solvent – many types ◦ Ink on paper – lab from crime

 Filtration – Separates liquid and solid ◦ pouring mixture into paper, the liquid passes through while paper collects the solid ◦ Coffee, draining spaghetti

 Evaporation – heat a liquid to its boiling point so that it evaporates leaving behind the other substances. ◦ You did this one in the lab!

 Extraction – dissolving a substance in a solvent in which all other substances are insoluble. ◦ You did this one in the lab!

 Sublimation – Separate solids. ◦ Heat mixture so that one of the substances is converted into a gas. Not many substances sublime  Dry ice

 Purpose – separation ◦ don’t want to lose anything! ◦ quantitative  Research: methods of separation SubstanceFormulaAppearanceMelting ptSolubility in 100g H 2 O SaltNaClWhite crystal801 o C35 g SandSiO 2 White crystal1600 o CInsoluble Ammonium chloride NH 4 ClWhite crystalSublimes at 340 o C 37 g