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.

Chemistry Topics

acids/bases applications of chemistry aqueous solution chemistry Atomic Properties / Structure conductivity consumer chemistry Demonstrations density electrochemistry electrolysis equilibrium Food Science gases General Chemistry kinetics Laboratory Instruction liquids magnetic properties metals noncovalent interactions Outreach Oxidation / Reduction oxidation/reduction Phases / Phase Transitions / Diagrams Physical Chemistry physical properties precipitation/solubility Public Understanding reactions solids stoichiometry thermodynamics