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5 Written questions

4 Multiple choice questions

  1. A technique that uses a solid stationary phase and a moving liquid phase to separate the components of a mixture.
  2. useful to separate two liquids w/ vastly diff. boiling points at least 20 degrees C.
  3. a process in which an applied vacuum draws a solution through filter paper held in a Buchner funnel.
  4. The continual boiling and condensing of a reaction mixture to ensure that the reaction takes place without the contents of the flask boiling dry.

4 True/False questions

  1. Column ChromatographyAn analytical technique which separates mixtures based on their distribution between a stationary liquid phase and a moving gas phase.

          

  2. DesiccatorThe continual boiling and condensing of a reaction mixture to ensure that the reaction takes place without the contents of the flask boiling dry.

          

  3. Fractional Distillationuseful to separate two liquids w/ vastly diff. boiling points at least 20 degrees C.

          

  4. RecrystallizationSeparation technique used to purify particles of interest from a mixture of solids. Mixture is dissolved in saturating amounts in warm solvent. As the solution cools, the pure substance crystallizes while impurities remain in solution.