The section discusses the chemical effects of electric current, demonstrating that certain liquids act as conductors of electricity and can undergo chemical reactions when current passes through them. This is explored through a series of experiments involving a tester circuit and various liquids, such as lemon juice and distilled water, showing differences between good and poor conductors. The text also addresses the concept of electroplating, explaining how it deposits one metallic layer on another using electric current, providing real-world applications in various industries. The section concludes with a summary of key concepts, emphasizing the relationship between electric current and chemical changes.