Recrystallization Techniques Quiz

Recrystallization is a purification technique for solid compounds. To perform Cooling ______, an impure solid compound is mixed with hot solvent to form a saturated solution. As this solution cools, the solubility of the compound decreases, and pure crystals grow from solution.

Recrystallization is a method of purifying a ______ by removing any impurities that might be mixed with it. It works best when the ______ is very soluble in a hot solvent, but very insoluble in the cold version of the same solvent. The ______ must be a solid at room temperature.

In chemistry, ______ are substances that are present in a chemical compound or mixture but are not part of its desired composition. These ______ can often affect the chemical and physical properties of the substance.

Find a ______. Dissolve the impure solid in a minimum volume of hot solvent. Remove any insoluble impurities by hot filtration. Slowly cool the hot solution to crystallize the desired compound from the solution. Filter the solution to isolate the purified solid compound.

Recrystallization is a method of purifying a compound by removing any ______ that might be mixed with it. It works best when the compound is very soluble in a hot solvent, but very insoluble in the cold version of the same solvent. The compound must be a solid at room temperature.