This chapter primarily focuses on fundamental knowledge of conductors and insulators of electricity. The subject matter on the chemical effects of electric current explains how the electric current flows and the conditions it needs to flow. Students can quickly point out the differentiation between good and bad conductors and apply it across domains.
The chapter highlights the direction of current flowing through a liquid and its effects on the surrounding medium. It further explains the diversity of water sources like acidified, rainwater, groundwater and how they conduct electricity in the fastest to the slowest range. Students get a brief introduction to electrolysis and the principles that explain the process to conduct electricity in liquids. In addition, young learners analyse the reactions occurring within the medium and the deposition of ions on electrodes.
The chapter provides vital information on numerous metals from the periodic table used as a preference for good conductors. Thus, students can grasp ideas on creating an electric circuit and the necessities required to flow the electric current. The lesson further discusses the tabulated list of current-conducting liquids with a slight mention of constituents present in the medium like acids, bases, and salts. Moreover, it tells about the crucial factors required for an electric current to flow and external forces to carry these currents.
The chapter elaborates on the electroporating methods and the metals used in their working principle. It explains the purpose, essence, and application used in various fields like industry, household, vehicles, etc. Students can gain a good grasp of conceptual understanding and attain in-depth knowledge of practical applications. They also get to know why distilled water is a bad conductor of electricity and how electroplating and electrorefining work. The chapter concludes with these processes and the electrolysis of water.