Name- Sonu kumar Class- 8th A Roll no - 833

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Outline Curriculum (5 lectures) Each lecture  45 minutes

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Presentation transcript:

Name- Sonu kumar Class- 8th A Roll no - 833

CHEMICAL EFFECTS OF ELECTRIC CURRENT

What is electric current? An electric current is a flow of electric charge, in elecrtric circuit this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as plasma.

The passage of an electric current through a conducting solution causes chemical reactions. This is known as the chemical effects of electric current. Some of the effects of the electric current are the following 1.Formation of bubbles of a gas on the electrodes. 2.Deposition of metal on electrodes. 3.Change in colour of solutions.

Does lemon juice or vinegar- a good conductor of electricity Does lemon juice or vinegar- a good conductor of electricity? Answer is yes. Please see the below image. Lemon juice

Electrolysis The process of decompostion of a chemical compound in a solution when an electric current passes though it is called electrolysis. The solution that conducts electricity due to presence of ions is called an electrolyte.

Electrolplating The most common application of electrolysis is electroplating. Electroplating is a process of coating one metal with another using an electric current, in this process, there exists an electrolyte, through which current passes.