This activity allows for the simple and accurate determination of the heat of fusion, ΔHfusion, of water at 0°C.
What is some of the chemistry involved in the formation of ice clouds when boiling water is thrown into icy air?
Javalab is a resource for free simulations to support student understanding of chemistry concepts. These web based simulations can be used across different platforms and are simple in their use by students. The open ended aspect of the simulations allow for teachers to be creative in how they are used in class.
This activity allows for the simple and accurate determination of the heat of vaporization, ΔHvap, of water at 100°C, and ultimately the approximate strength of a hydrogen bond in boiling water, in kJ·mol–1.
Some metals and metal alloys undergo a transition to brittleness at cold temperature. This phenomenon likely contributed to the demise of the Titanic.
Describing the number density of molecules involved in chemistry demonstrations while presenting those demonstrations can help to convey concepts such as the small size of molecules and how the distance between molecules can vary during change of physical state.
A variety of resources are available for chemistry faculty interested in incorporating lessons and activities around art and archeology. Find out what they are in this follow up post from the inaugural ChemEd X virtual Journal Club held April 2022.
Addition of a small amount of azobenzene to eicosane can lower its melting point to where it can be melted by body heat. This can be used in demonstrations and classroom activities related to freezing point depression and phase diagrams.
A brinicle is a finger-like formation of super-cooled briny solution that grows underneath sea ice. The formation process of this ‘ice finger of death’ has only recently been captured for the first time on camera. T
Some explorations and explanations regarding superconductors and the quantum levitation (also known as quantum locking) experiment.