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1999
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July
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In the Classroom
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Tested Demonstrations
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Flame Tests Using Improvised Alcohol Burners
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submitted by: Veljko Dragojlovic
Department of Chemistry, Northwest Community College, 5331 McConnell Avenue, Terrace, BC V8G 4C2, Canada
checked by: Richard F. Jones
Department of Chemistry, Sinclair Community College, Dayton, OH 45402
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July 1999
Vol. 76 No. 7
p. 929
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| Abstract |
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In this demonstration, an improvised alcohol burner, with a methanol solution of a salt as fuel, produces a long-lasting brightly colored flame. A disadvantage when using a regular alcohol burner is that the burner has to be cleaned and a wick replaced, before a solution of a different salt can be used. For our demonstration, alcohol burners are made from small (5-mL) glass vials. The vials are filled with a methanol solution of the desired salt and a paper wick is added. Thus, a small amount of solvent (5 mL or less) provides a colored flame, which lasts for several minutes. Vials and paper wicks can be reused. Use of the described alcohol burner in a flame test demonstration has several advantages. It is inexpensive, a number of tests can be run simultaneously, and stock solutions of metal salts can be prepared in advance and stored for future demonstrations.
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| More Information |
 Citation |
Dragojlovic, Veljko. J. Chem. Educ. 1999 76 929.
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Keywords |
Demonstrations; Introductory / High School Chemistry; Atomic Properties / Structure; Descriptive Chemistry; Excited States / Energy Transfer; Qualitative Analysis
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History |
Created:
Last Updated: |
June 9, 1999
June 23, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
1999
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July
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929
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