This page supplements our article titled Microscale Demonstration of the Paramagnetism of Liquid Oxygen with a Neodymium Magnet, by Bruce Mattson*, Creighton University, Omaha, Nebraska 68178.  The article is scheduled to appear in the August 2007 issue of the Journal of Chemical Education.

    When a neodymium magnet is brought near a suspended small glass tube (2.5 mL) containing 2 mmol (64 mg) liquid oxygen, the tube is attracted to the magnet demonstrating oxygen’s paramagnetism.  Larger amounts of liquid oxygen can be produced in a similar fashion using a sandwich bag filled with oxygen in place of a 60-mL syringe used to condense 2 mmol oxygen.  On the larger scale, the blue color of liquid oxygen is readily observable by students.

Play video of this demonstration: