Some simple lesson plans for teaching chromatography, separating substances and chemical/physical change.
Use the picture on the first slide for a discussion on whether purity is important through the prism of drug taking. Illegal drugs are an unknown purity and content, one of the reasons they are dangerous.
Saltiest sweat, use brine water for the best results.
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Good starting point for preparing a lesson on this topic, but I personally feel like significant modification is required for me to use it in a lesson.
I dont think the first slide is appropriate but loved the chromatography work sheet saved my time
Good resource
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