Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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Sub Image2:Macro to Micro Structures
1) Atoms and Molecules2) Macro to Micro Structures 3) Energetics and Dynamics 4) Theory and Practice in Chemical Systems 5) Chemical Design 6) The Chemistry of Life 7) Chemistry and the Environment 8) Chemistry at the Interface
From: Katie Johnson (johnson5@madison.k12.wi.us)
Date: Thu Feb 20 2003 - 19:33:19 EST

I also thought the marble activity was great!

I do a reaction similar to the iodine clock reaction, but I use sodium
thiosulfate and hydrochloric acid. The students do a serial dilution with
the thiosulfate solution and time how long it takes to become so opaque
that they can no longer see a standard mark through the solution.

Katherine Johnson
Chemistry Teacher
Madison East High School
Madison, Wisconsin


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