energy

The “Pharaoh’s Serpent” chemical reaction involves the thermal decomposition of mercury (II) thiocyanate:^1,2

This activity is intended for Chemistry Teachers who plan to discuss the energetics of phase changes.

I’m always looking for safer and cheaper options to perform chemical demonstrations, and I recently discovered a line of Elmer’s Glue products that support this pursuit. I shared three demonstrations using three Elmer glue products during the ChemEd X Demos Symposium at ChemEd 2023.

This piece explains an activity that allows for the simple and accurate determination of the heat of vaporization, ΔH_vap,

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.

Co-Authored by Dean J. Campbell*, Marius Stancu*, and Matthew Zhou* *Bradley University, Peoria, Illinois