Applied Strategy: Inquiry-based Learning
Single class period (< 90 mins)
In this CLAW (Chemistry Laboratory Alternative Work) At-Home experiment, students will perform an experiment using household chemicals and materials. It was designed as a substitute for in-person laboratories, usually performed at the college level, during the COVID-19 pandemic. However, it may also be used as an experiment that students can carry out in the lab or for student projects.
The objective of this at-home experiment is to identify the food, drug, and cosmetic (FD&C) dyes found in food/beverage samples (such as Kool-aid, Gatorade, popsicles) or water-soluble markers, using the paper chromatography technique. Determination of the retention factor (Rf) values of the dyes found in the samples and comparison with those of known commercial sources will be carried out in this at-home experiment.
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