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1997
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August
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In the Classroom
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Tested Demonstrations
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Observation of Magnetic Repulsion Acting on Nitrogen Bubble on Water Surface - A Simple Experiment of Studying Diamagnetic Property of Nitrogen
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Yukinori Matsuyama, Takashi Yasuoka, Syunmei Mitsuzawa, Tunetaka Sasaki
Department of Chemistry, Tokai University, Kitakaname, Hiratsuka-shi, Kanagawa-ken 259-12, JAPAN
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August 1997
Vol. 74 No. 8
p. 943
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| Abstract |
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Observation of the paramagnetic property by a simple experiment showing the attraction of an oxygen bubble on the water surface to a magnet has been reported. In this article, we report the opposite behavior magnetic repulsion observed for a nitrogen bubble by the same method. A nitrogen bubble of 1-0.5cm diameter is produced by using a syringe on the surface of a dilute soap solution placed in a Petri dish in the atmosphere. A permanent magnet with 4500 gauss is made to approach the bubble from a 45 angle to the water surface. As the distance between the magnet and the bubble approaches 0.3cm, the bubble will be seen to be repelled by the magnet. The present experiment may become more attractive and instructive for students of college chemistry and physics, if it is demonstrated together with the experiment of the attraction of an oxygen bubble to the magnet.
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| More Information |
 Citation |
Matsuyama, Yukinori; Yasuoka, Takashi; Mitsuzawa, Syunmei; Sasaki, Tunetaka. J. Chem. Educ. 1997 74 943.
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Keywords |
Demonstrations, Teaching/Learning Aids, Teaching/Learning Theory/Practice, Magnetic Properties, Atomic Properties/Structure
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History |
Created:
Last Updated: |
July 28, 1999
June 23, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
1997
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943
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