The Digestive System. Because aspirin or ibuprofen can irritate the stomach, they are coated with an acid-resistant substance so that they can survive the acid environment of the stomach. The purpose of this activity is to simulate a pharmaceutical recipe to coat a “Skittle pill” so that it will not dissolve in acid. This is a fun, hands-on activity to run from an MS student point-of-view!
First a demonstration is described showing how coated pills will not dissolve in acid, but readily dissolve in a basic or neutral solution. The hands-on activity that follows has students experiment with different proportions of powders such as flour, salt, and sugar to create a mixture that will coat a Skittle and prevent the color of the Skittle from being dissolved in vinegar. Notes are provided in a graphic format for those that have document cameras.
Also provided are data tables where students can record the proportions of each ingredient used to make the coating. The tables can be a stand-alone assignment or can be incorporated into an interactive lab notebook.
This product is also a component of the Human Body System BUNDLE
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