This lab uses various common chemical compounds in a Ziploc bag lab to teach about the idea of controlled experiments in chemistry. Students perform different combinations of reactions on four substances, look for common products, and use a table to deduce which substances produce which results.
My labs are straightforward. Some of them are paper labs, but the ones that involve significant laboratory setup or calculations to be made on the part of the teacher are written about in a Teacher Notes section at the end of those particular labs. I use relatively safe and inexpensive chemicals. Of course, safety precautions are always noted at the beginning of the lab.
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Science Education by Joshua Wickline is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 United States License