Agenda Explore methods of separation Notes on methods of separation

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

Explore

Methods of Separation

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

Methods of Separation

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

Separation Lab

Substance Formula Appearance Melting pt Solubility in 100g H2O

Salt NaCl White crystal 801oC 35 g

Sand SiO2 White crystal 1600oC Insoluble

Ammonium chloride

NH4Cl White crystal Sublimes at 340oC

37 g