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Product Highlights
Introduce students to the mechanics of molecular spectroscopy and how electromagnetic radiation interacts with molecular compounds. Determine the concentration of food dyes in powdered drink mixes using the Beer-Lambert law. Prepare standard solutions of 2 food dyes, plot calibration curves of absorbance as a function of concentration for each dye, and then determine the concentration of each dye in its unknown solution. Procedure does not use toxic thiocyanate salts. For 30 students working pairs.
Note: This lab is written to use 100 test tubes. In Investigation 2, students make 10 serial dilutions. If 100 test tubes are not available, students can make one dilution at a time, follow the lab procedure, and then rinse out and reuse their available test tubes.
This kit addresses the following AP® Chemistry Concepts:
Digital Resources
Includes 1-year access to digital resources that support 3-dimensional instruction for NGSS. Digital resources may include a teacher manual and student guide, pre-lab activities and setup videos, phenomenon videos, simulations, and post-lab analysis and assessments.
Teacher's manual includes both a guided inquiry and an inquiry version of this lab. A digital teacher's manual, included FREE with kit purchase, is a 12-month eBook license to the Spectrophotometric Analysis of Color teacher's manual. You can also access the digital student guide for this kit for free at Carolina Science Online®.
AP®: is a trademark registered and/or owned by the College Board®, which was not involved in the production of, and does not endorse, these products.
