Curated OER
2001 U.S. National Chemistry Olympiad Part III
Here is a comprehensive method for assessing chemistry learners' knowledge; have them approach two laboratory problems, plan their methods of solving each, and then actually carry out the experiments to find the answers. Both the...
Curated OER
The Case of Similar Substances
Students perform tests in the lab to identify an unknown substance. In this physical science instructional activity, students observe the physical and chemical properties of substances. They formulate a conclusion based on experimental...