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CBSE Class 8 Science Chapter 14 Chemical Effects of Electric Current Revision Notes

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CBSE Class 8 Chapter 14 Chemical Effects of Electric Current

 

CBSE Class 8 Science Chapter 14 Chemical Effects of Electric Current Revision Notes are by far the best and most reliable Revision Notes for Chemical Effects of Electric Current. These CBSE Class 8 Science Chapter 14 Chemical Effects of Electric Current Revision Notes provided here are prepared by our subject experts at Swiflearn to help students to recall important concepts and points related to Chapter 14 Chemical Effects of Electric Current of CBSE Class 8 and in turn, enhance their confidence.

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Chemical effects of electric current

The passage of an electric current through a conducting solution causes a chemical reaction. It may cause the formation of bubbles of gas on the electrodes, deposits of metal on electrodes, or change in color of the solution, etc.

 

Electroplating

The process of depositing a layer of any desired metal on another material by means of electricity is called electroplating.
▪ When an electric current is passed through the copper sulphate solution, the solution dissociates into copper and sulphate ions.
▪ The free copper is drawn to the electrode connected to the negative terminal of the batter and gets deposited on it.                                                                          ▪ From the other electrode which is a copper plate, an equal amount of copper gets dissolved in the solution.
▪ Thus, the loss of copper from the solution is restored and the process continues.
▪ This means that copper gets transferred from one electrode to the other.

 

CBSE Class 8 Chapter 14 Chemical Effects of Electric Current PDF

 

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