Separating a Mixture of Compounds

Learning Objectives:

Students separate a mixture of compounds via three separation processes; sublimation, filtration, and evaporation.


Students separate the components of a mixture of sand, sodium chloride, and ammonium chloride. They first sublimate out the ammonium chloride from the mixture, and then add water to the remainder; sodium chloride dissolves in water, allowing it to be filtered out from the sand. Students are able to determine the mass and mass percentage of each component.