Some jewelry and flatware consists of precious metal plated onto a less expensive base metal. The process of plating depends upon the chemistry of electrolytic cells. During a single replacement reaction a metal that is a strong reducing agent spontaneously gives electrons to a less active metal. The reverse reaction does not occur spontaneously. Electrical energy can be used, however, to reverse the flow of electrons so the less active metal is oxidized and the more active metal is reduced. This is what happens in an electrolytic cell. Electrolytic cells use electricity to produce chemical reactions. This PowerPoint presentation explains the chemistry behind electrolytic cells, and explains how electrolytic cells can be used for rechargeable batteries, electrolysis, and electroplating. Worksheets on this topic are available free of charge on my website at www.evanschemistrycorner.com.