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What's a Mole for?
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Abstract
A classroom competition for guessing the number of jelly beans in a jar of candy is used to help students understand the premise of the mole concept: counting particles by weighing. Students calculate the number of jelly beans in the jar of candy by weighing them all and then dividing this weight by the average weight of a single jelly bean. Then, they extend this process to understand how the mole concept enables chemists to count particles by weighing.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Feature):
Trading PostKeywords (Pedagogy):
Analogies / TransferKeywords (Subject):
StoichiometryCiting Articles
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This article has been cited by 1 ACS Journal articles (1 most recent appear below).
The Mole, the Periodic Table, and Quantum Numbers: An Introductory Trio
Raymond S. Ochs , Mali YinJournal of Chemical Education2001 78 (10), 1345The Mole, the Periodic Table, and Quantum Numbers: An Introductory Trio
Raymond S. Ochs , Mali YinJournal of Chemical Education2001 78 (10), 1345We suggest that three foundational ideas be presented at the start of an introductory chemistry course: the mole, the periodic table, and quantum numbers. Moreover, it is critical that nonessential detail be suppressed in order to provide a first-pass ...
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- Received: August 03, 2009
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