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Safe Swimming with Sodium - Chemical Demonstration Kit

Safe Swimming with Sodium - Chemical Demonstration Kit, AP8916
Catalog Number
Safe Swimming with Sodium - Chemical Demonstration Kit
Product Description

By: The Flinn Staff

No chemistry class is complete without the spectacular demonstration of alkali metals reacting with water. Safe Swimming with Sodium is a novel variation which is much safer to perform than the standard sodium demonstration of simply dropping a small piece of alkali metal into a beaker of water. In this demonstration, two immiscible liquids, water and mineral oil, are poured into a graduated cylinder. When a small piece of sodium is added to the cylinder it falls through the top layer of mineral oil and reacts with the water at the interface and is forced back into the mineral oil layer. The density of sodium brings it back down into contact with the water and the process begins again. Sodium pieces are pre-cut for use. Teacher Demonstration Notes included. Enough materials are included to perform the demonstration seven times.
Concepts: Alkali metals, density, immiscible liquids.
Time Required: 15 minutes
Chemicals Provided: Sodium, phenolphthalein, mineral oil.


Additional Resources
Flinn Catalog/Reference Manual Page 380
Flinn Middle School Catalog/Reference Manual Page 369
P.O. Box 219, Batavia, IL60510



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