Day 146: Joly Photometer & Reaction Rates

Physics: Joly Photometer

Students used the Joly Photometer Direct Measurement Video to find a relationship between light intensity and distance from a source. I could tell a lot of my students had an AP test yesterday; I spent a lot more time than usual discussing with lab groups what variables they should graph, how they should collect data on those variables, and how to interpret and linearize the graph. I think their struggles had more to do with how mentally fried the AP chem students were than anything else.

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Chemistry: Reaction Rates

Students timed a reaction between copper chloride and hydrogen peroxide under different conditions to determine what impacts the reaction rate.

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