Generation of an Animated Molecular Model

Resonance is a key fundamental principle taught in introductory organic chemistry. It is traditionally taught early in the first semester because it impacts most subsequent concepts taught throughout the entire year. At this stage students are just learning to draw and interpret structures and often have difficulty with abstract principles and intricate details. This animated molecular model constructed of students provides a concrete and enjoyable method for students to participate in the electron delocalization among atoms involved in a resonance hybrid. As students build the model, they gain practice interpreting line-angle structures and distinguishing localized lone-pair electrons from delocalized electrons. The animated molecular model effectively illustrates the development of or transfer of formal charge as electrons are delocalized. Class participation is enhanced as students assess each resonance contributor to the overall hybrid.