give three applications of chemical effect of electric current?
1. Electroplating is the application of electrolytic cells in which a thin layer of metal is deposited onto an electrically conductive surface. Silver plating and gold plating of jewellery or silverware is done to improve the appearance and value of the items. Chromium plating improves the appearance of objects and also improves its hardness. Zinc or tin coatings may be applied to confer corrosion resistance.
2. Electrolysis of water is used to produce hydrogen which is used as a fuel for powering internal combustion engines or electrical motors.
3. Electrolysis is used for extraction and purification of metals like aluminium and copper from their ores.
Electoplating : coating one metal with another using electricity. it is used to protect materials from corrosion. it is used to make objects look attractive.
Electrolysis : separation of a substance from another. water can be split into hydrogen and oxygen using electrolysis.