Solutions of Chemical Effects Of Electric Current from SCIENCE For Class 8

This topic introduces us to the theory that water is a good conductor of electricity. It explains that contact of water with electrical appliances can be light threatening. We also learn that our body is a good conductor of electricity.

The topic provides knowledge on the electric circuit. It explains the flow of electricity from a cell or a battery to an electric bulb. The flow of electricity lights the bulb. It also talks about the two terminals of a cell or a battery.

This topic deals with the good and bad conductors of electricity. It mentions that pure water is a bad conductor of electricity. Also, we will learn about the electrical charge in the cloud.

The topic discusses the electrical conductivity of various liquids. It describes LED and its uses. It concludes that water becomes a conductor of electricity with the addition of acids, bases, or salts to it.

In this topic, we will learn about electrolysis of water. The presence of hydrogen and oxygen in water makes it available for the experiment. It explains testing of gases during electrolysis and effects of passing electric current in impure water.

The topic covers the three steps of application of electrolysis: refining of impure metals, refining of metal ore for obtaining pure metal, and electroplating. The objective of electroplating is also discussed along with its application.

This topic comprises an experiment to get an improvised electrolytic cell. It discusses the steps involved in the whole experiment. It also includes a diagram to show the flow of current in a Voltaic or electrolytic cell.