two-year college

Too Hot to Handle? Hydrogen Reacts with Oxygen on Palladium Foil

The reaction of hydrogen and oxygen gases to form water is well known to be an exothermic reaction. That reaction can occur by first absorbing the hydrogen into palladium metal, and then placing the resulting palladium hydride into contact with oxygen in the air. Infrared and visible light videos were recorded for this process involving palladium foil, and the Green Chemistry and safety aspects of these activities are considered.

Making Chemistry Visible with Doug Ragan

Many chemistry teachers use models and diagrams to help students describe how matter behaves at the particle level. On April 14, 2022, Doug Ragan explained how he uses colored magnets in his classroom to represent things such as subatomic particles, states of matter, balancing chemical equations, types of bonding, molecular geometry and much more. View a recording of his presentation and access materials he uses. 

Paper Snowflakes to Model Flat Symmetrical Molecules

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.

ChemEd X Talk: Making Chemistry Visible with Doug Ragan

ChemEd X Talks with Doug Ragan about how he uses colored magnets in his classroom to represent things such as subatomic particles, states of matter, balancing chemical equations, types of bonding, molecular geometry and much more. Join the conversation! Register for this 45 minute Zoom meeting to be held April 14th at 8pm EST.

ChemEd X Journal Club: Ceramics Applications in AP Chemistry

You are invited to participate in a zoom meeting hosted by Dr. Melanie J. Harvey, Johnson County Community College, on April 7 at 7:00 pm CST (8:00 pm EST) to discuss Dr. Christopher R. Vyhnal’s paper, “Curricular Materials on the Chemistry of Pottery, Including Thermodynamic Calculations for Redox Reactions in the 3-Stage Firing Process of Athenian Black- and Red-Figure Vases Produced from the Sixth-Fourth Centuries BCE,” published this year in the Journal of Chemical Education. Register early! This ChemEd X Journal Club is limited to the first 50 registrations.