Introduction to Electrochemistry

4. Batteries and Balance

When you look at this picture, do you see many different kinds of batteries or do you see many different shapes of the same chemical system? Your answer might indicate whether you view batteries from a technological perspective or from a scientific perspective.

In this module you will extend and apply your understanding of electrochemical change to understanding the design and function of a variety of types of electrochemical cells, one of which is the electric cell—the technology used in batteries and in other applications.

You will use the skills and techniques you have been developing to analyze and predict change in electrochemical systems. You will do this within the context of electric and electrolytic cells. You will also investigate the technological aspects of, and your reliance on, these chemical systems.

As you investigate the electrochemical cells introduced in this module, you will see how chemical knowledge about reduction-oxidation reactions is applied to solving problems and expanding capabilities. You will consider the purpose and impact of different types of electrochemical cells.

In this unit you will investigate the following question:

• How are principles of oxidation and reduction applied to electrochemical cells?