Electrochemistry is chemical reaction that involves charge transfer across a solid/liquid interface. Electrochemistry is all around us in the form of batteries, corrosion, and biological cell communication. Understanding and predicting electrochemical interactions is necessary for reducing the costs of corrosion and advancing energy storage technology. A method to investigate interfacial reactions is Electrochemical Impedance Spectroscopy (EIS). A small amplitude alternating potential is applied to the sample over a range of frequencies and the response is measured. An electrochemical interface can be modeled as an electric circuit and EIS provides a method to resolve the electrical components such as capacitors, resistors, or inductors. Using this powerful but accessible technique, reactions on the surface of materials can be characterized. EIS is a pivotal research technique used at Boise State to predict corrosion rates, test semiconductor device performance, deposit DNA origami nanostructures, and characterize fuel cell and battery performance.