Ryan Johnson and I took a trip to the top of Pikes Peak to study the Coke and Mentos experiment. And we had a few surprises along the way...
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.
General chemistry is often perceived as a gatekeeping course for STEM students, particularly in large-enrollment settings. To enhance student engagement and understanding, this study introduces two "bookend" activities—one at the beginning and one at the end of the semester—designed to connect chemistry concepts with students’ interests and career goals.
The first activity, conducted during the first week, prompts students to explore chemistry subfields and career paths via the American Chemical Society (ACS) website, helping them see chemistry’s relevance to their own aspirations. The second activity, due before the final exam, requires students to analyze a chemistry-related news article, linking course concepts to real-world applications. Both assignments promote active learning, a sense of belonging, and an appreciation for chemistry’s role in various fields.
Implemented in large lecture courses, these activities have been well received, fostering engagement and personal connections to chemistry. This approach offers an adaptable model for integrating real-world relevance into general chemistry curricula, potentially improving student buy-in and academic persistence.
Learn how current research on climate change can be used in your next lesson on metric prefixes and unit conversions.
Explore chlorinated hydrocarbons and dipoles with paper and toy models like LEGO, K’Nex, and Lux Blox! Paper models reinforce molecule polarity lessons, with templates and assignments included in the Supporting Information.
Take a walk and explore the chemical winter wonderland of snowflakes...and diamonds!
Recent space-related phenomena like aurora and a comet were viewed by large numbers of people. These phenomena can be connected to concepts described in chemistry courses, such as electronic structures and light emission associated with species such as excited oxygen atoms.
A Picture-Perfect activity for National Chemistry Week 2024!
This chemical reaction is just plain weird...but also beautiful!
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.
