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5 Written questions

4 Multiple choice questions

  1. the process in which a solid changes directly into a gas
  2. Gravity filtration is used for when the desired product is in solution (usually hot) where as vacuum filtration has the desired product being a solid.
  3. Separation 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.
  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. Reflux condenserThe continual boiling and condensing of a reaction mixture to ensure that the reaction takes place without the contents of the flask boiling dry.

          

  2. Desiccatorthe process in which a solid changes directly into a gas

          

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

          

  4. Vacuum FiltrationGravity filtration is used for when the desired product is in solution (usually hot) where as vacuum filtration has the desired product being a solid.