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"Experiment with a Candle" without a Candle
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Abstract
In the popular experiment in which a burning candle in an airtight cylinder purports to demonstrate the percentage of oxygen in the air, the main reason for the change in volume is the expansion and contraction of gases because of warming up or cooling down, not because the oxygen is used for burning. To support this explanation we have devised two experiments, the results of which are similar to the classic experiment with a candle, although a candle is not used. The experiments demonstrate that burning cannot be the only reason for the reduction of volume of gases in the cylinder.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Domain):
Chemical Education ResearchKeywords (Pedagogy):
Misconceptions / Discrepant EventsKeywords (Subject):
GasesCiting Articles
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This article has been cited by 1 ACS Journal articles (1 most recent appear below).
The Science Teacher: Winter 2003
Steve LongJournal of Chemical Education2003 80 (2), 135The Science Teacher: Winter 2003
Steve LongJournal of Chemical Education2003 80 (2), 135This report covers articles from The Science Teacher from May through November 2002. Because the May and September issues did not contain any chemistry-related articles, this review focuses upon the October and November issues. They contain articles ...
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- Received: August 03, 2009
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