Embarking on a new learning journey is always better with the help of others.
The importance of surface area can be illustrated by adding spherical solids at known sizes and temperature to other substances at different temperatures and then monitoring the rates of temperature changes of the system over time. Larger spheres (with less surface area per sample) exchanged heat with water more slowly than smaller spheres, and less thermally conductive glass spheres exchanged heat with water more slowly than iron spheres. Additional, more colorful demonstrations are described in which small glass spheres cool thermochromic plastic cups more quickly than larger glass spheres.
Nora Walsh outlines the interactive notebook pages she uses for her unit on the Science of Matter. All of the documents and foldables are available for download.
Readers likely recognize Tom Kuntzleman from his numerous ChemEd X blog posts and Journal of Chemical Education articles as well as his dazzling demonstrations on his Tommy Technetium YouTube and TikTok channels! Get to know Tom better in this interview.
A continuation of Counting Orbitals I: The 'Ah-ha! Moment' and Quantum Numbers. Sit back and adjust your eyeballs for some colorful graphics.
Nora Walsh shares an overview of how she delivers content for her interactive notebooks during class. She includes a few video clips from her classroom showing a variety of ways to have students fill in their INB pages.
On July 14, 2022, Dr. Sarah English provided an overview of the digital interactive notebook process along with guidance on how to start building your own. In this ChemEd X Talk she outlined her organizational plan, examples of notebooks she has created and shares many of the resources she finds helpful in creating them. View a recording of Sarah's presentation and access materials here.
Flash rocks, typically pieces of quartz that produce light when struck together, are an example of the complex phenomenon of triboluminescence. The green chemistry aspects for the flash rock demonstration are considered, and LEGO models illustrating quartz crystals, piezoelectric materials, and nonpiezoelectric materials are presented.