Concentration, Amount and Counting by Weighing

Tyson, Julian

Publication:
Concentration, Amount and Counting by Weighing

dc.contributor.author	Tyson, Julian
dc.contributor.department	University of Massachusetts - Amherst
dc.date	2023-09-23T20:08:49.000
dc.date.accessioned	2024-04-26T20:25:20Z
dc.date.available	2024-04-26T20:25:20Z
dc.date.issued	2018-01-01
dc.description	<p>Background: Problems that I have encountered in teaching a CHEM 101 course “How much arsenic do we eat?” A gen. ed. for non-science majors. 17 times online and 4 times F2F.</p>
dc.description.abstract	Concentration, Amount and Counting by Weighing UMass Amherst STEM Ed Institute Saturday Workshop 2/3/2018 Julian Tyson, Professor Emeritus, Department of Chemistry. Tyson@chem.umass.edu Session 1. Introductions. Ice-breaker: The elementarity contest. Setting the scene: “How much arsenic do we eat?” Why do we want to know? The Consumer Reports articles (Nov 2012 and Nov 2014) Dealing with really big and really small numbers. Session 2. Amount, concentration Solids, liquids and gases. The “parts per” concept. Session 3. Counting by weighing The count equation. Rice grains (the bottle content problem), atoms and molecules.. Chemical formulas and balanced chemical expressions. The numbers in the periodic table. Applications in chemical analysis Session 4. Scaffolding students. More on the arsenic-in-rice story Wee Mac’s Sandwich Shop and the Wee Mac dozen, bread + cheese + turkey (BCT) From everyday experiences to parts per billion. Amount vs concentration. Sample problems.
dc.identifier.uri	https://hdl.handle.net/20.500.14394/43855
dc.source.status	published
dc.subject	Concentration
dc.subject	Amount
dc.subject	Counting by Weighing
dc.subject	Arsenic
dc.subject	Chemistry
dc.subject	Environmental Chemistry
dc.subject	Science and Mathematics Education
dc.subject	Teacher Education and Professional Development
dc.title	Concentration, Amount and Counting by Weighing
dc.type	article
dc.type	article
digcom.contributor.author	isAuthorOfPublication\|email:tyson@chem.umass.edu\|institution:University of Massachusetts - Amherst\|Tyson, Julian
digcom.identifier	stem_satsem/30
digcom.identifier.contextkey	11478023
digcom.identifier.submissionpath	stem_satsem/30
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