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Chemistry

Egg-lectrons and McLewis Structures

Dean Campbell | Fri, 02/28/2025 - 22:13

Egg cartons and beverage holders can be used as models of atoms, with their dimples representing orbitals. Each dimple can hold up to two objects such as milk jug caps, plastic eggs, and cup pieces to represent electrons in the orbitals. Partially overlapping the trays by stacking the dimples represents chemical bonding and produces molecular models resembling Lewis structures. The models can be easily made from materials that can be readily found grocery stores and fast-food restaurants.

UNO OUT…..Demystifying Stoichiometry

Nina Hike | Tue, 02/25/2025 - 14:57

This article describes a game aimed at helping students become comfortable using dimensional analysis. Designed to mimic the popular card game UNO, MOLE-O encourages students to think about how to set up a stoichiometry problem utilizing a deck of UNO-like playing cards. 

Printable Signal Flag Periodic Table

Joseph Lomax | Mon, 12/16/2024 - 10:13

Nothing is more iconographic to Chemistry as the Periodic Table, and Signal Flags are colorful and dandy design that are iconographic to the seafaring community. While teaching chemistry at the U.S. Naval Academy, the author used Signal Flags to make the Element Symbols giving a structure that is immediately recognizable, yet somewhat mysterious. Use the supporting information to download the author's version or customize your own!