The Diamonds of Winter
Tom Kuntzleman | Thu, 01/09/2025 - 09:44
Take a walk and explore the chemical winter wonderland of snowflakes...and diamonds!
inorganic chemistry
Fluorescence Rocks! Exploring Glowing Sodalite
Dean Campbell | Wed, 08/21/2024 - 12:41
Syenite rocks containing sodalite that fluoresce yellow have been found on Lake Superior beaches in recent years and are of interest to collectors. The fluorescence of this mineral, which can be found in other localities, can be shown in classrooms and studied spectroscopically. Its structure can also be modeled with LEGO bricks, enabling further classroom connections.
Tissue Paper Banners Connected to Chemistry
Dean Campbell | Sun, 11/05/2023 - 20:56
Tissue paper can be folded and cut with chemistry-related patterns to make decorative paper banners that can be used as Mexican-themed decorations. Chemistry concept connections include lattice energy, bandgap energy, and ionic crystal fracture.
Unit Cells and Layer Sequences using Dimpled Packaging
Dean Campbell | Sun, 10/01/2023 - 09:07
Regularly dimpled trays such as those used in food packaging can be used to represent layers of atoms in solid structures. For example, the square array of dimples in transparent plastic mini quiche trays can be used to depict layers within cubic or tetragonal unit cells. Multiple solid structures and ways to represent those structures are described.
Paper Snowflakes to Model Flat Symmetrical Molecules
Dean Campbell | Wed, 04/06/2022 - 13:39
Flat, symmetrical molecules can be modeled by folding a sheet of paper, cutting patterns into the folded structure, and unfolding to produce the flat paper models. The finished models resemble paper snowflakes, but have a variety of rotational symmetries. Template patterns for several molecules are available for download in the Supporting Information.
Are Red Table Grapes Sold in Stores Always Red?
Scott Donnelly | Mon, 03/28/2022 - 23:43
Structure. Structure. Structure. This blog post describes a classroom activity where students propose the structure of a molecule- based on bond type information- used to accelerate the change in color of red table grapes.
Gas laws and the Particulate World
Chad Husting | Sat, 09/25/2021 - 16:07
Chad Husting uses a few simple gas law experiments to introduce his students to the particulate level of chemistry.
Quantum Levitation and Superconductors
Tom Kuntzleman | Thu, 06/03/2021 - 13:21
Some explorations and explanations regarding superconductors and the quantum levitation (also known as quantum locking) experiment.
Simple formation of metal mirrors
Tom Kuntzleman | Mon, 05/10/2021 - 09:57
Beautiful, metallic mirrors of copper or silver can easily be formed in test tubes. Simply add the appropriate metal salt to a test tube, and heat! These reactions should be performed in a fume hood.
A Simple Method to Determine the Number of Lone Pairs on a Hypervalent Central Atom
Joseph Lomax | Wed, 02/10/2021 - 16:21
Teaching about hypervalent structures is problematic. This post discusses a simple and quick way in determining the number of lone pairs on a hypervalent central p-block atom.