Sublimation is an excellent method to introduce crystals and crystal formation. In this experiment crystals of para-dichlorobenzene form readily and efficiently from mothballs in a safe setting, using canning jars with ice cubes. The experiment can serve as an introduction to the concept of molecules, especially when combined with the condensation of liquids and the perception of odors. This sublimation is presented for elementary school teachers, but can be an effective demonstration in other settings.
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Citation
Vollmer, John J. J. Chem. Educ.2000 77 486.
Keywords
Demonstrations; Introductory / High School Chemistry; Consumer Chemistry; Descriptive Chemistry; Teaching / Learning Aids
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