two-year college

PFAS Guided Inquiry Activity

This PFAS Analysis guided inquiry activity introduces students to "Forever Chemical" pollutants in the environment as they apply their previous knowledge related to electronegativity, polarizability and bond strength to PFAS molecules. 

Laser-Cutting CDs into Snowflakes

Laser cutters can be used to cut and engrave a variety of thin materials. Compact discs, composed of layers of polycarbonate plastic and aluminum metal, were explored for their ability to be shaped with a laser cutter. The laser can successfully cut and engrave the compact discs into the shape of snowflake. However, each disc must first be coated with a material like glue in order to protect the plastic from discoloration and the byproducts from cutting the plastic that can accumulate on the disc surface.  

ChemEd X Talk: New POGIL Activities for AP Chemistry

The new edition of “POGIL Activities for AP Chemistry” is on track to be released next winter. Get a sneak peak of the new activities and improvements that have been incorporated into the new edition. We will start with a brief description of what POGIL pedagogy is, and how it can improve your classroom. Then, everyone will have an opportunity to try out a brand new AP Chemistry POGIL activity from the student perspective. Register to join us!

Upgrading a Classic Science Demonstration

In a classic demonstration of energy conservation, smashing two large steel ball bearings generates sufficient heat to burn a hole through a piece of paper. Josh Kenney found this demonstration underwhelming because the paper doesn't look burned. So, he upgraded the experiment by covering the paper in Elmer's Color Changing Glue. Now, a spectacular color change reveals the increase in heat!

Stoichiometry with Beads

Teaching and learning the concept of limiting reactants can be challenging. In this activity students manipulate beads to learn about stoichiometry. A virtual drag & drop version is also available.