Public Understanding

Chemical Tests on Coins

Simple chemical tests are described that can indicate the presence of certain metals in coins. A wide variety of chemical concepts are involved. The experiments described are a natural fit for the 2019 National Chemistry Week theme of "Marvelous Metals!"

Critical Thinking vs. Critical Pedagogy

I recently participated in a conference known as the Digital Pedagogy Lab as a fellow, which required leading a workshop (or an equivalent). I chose to structure my workshop around the ideas of critical pedagogy and STEM, and particularly how we use these ideas in a practical way in the classroom (both F2F (face-to-face) and DL (distance learning)). This blog will be one of a two-part series on these topics.

The Liquid Nitrogen Cloud

Have you ever seen the liquid nitrogen cloud? Do you wonder how the cloud forms when hot water is thrown onto liquid nitrogen? This post explores the liquid nitrogen cloud and possible explanations for its formation.