• Physics Tuition Singapore Secondary Science Tuition – Chemical effect

    Physics Tuition Singapore Secondary Science Tuition – Chemical effect – Electroplating

    Chemical effect

    • A chemical change caused by electricity is called electrolysis
    • An electrolyte is a liquid or a solution which can conduct electricity. The electrolyte undergoes chemical change when electricity passes through it.
    • Electrodes are electrical contacts which allows electric current to leave and to enter the electrolyte.
    • Electrolysis is widely used in electroplating and in the extraction of metals.

    Electroplating

    • In electroplating, an object is coated with a layer of metal.
    • The object to be coated is connected to the negative terminal of the power supply.
    • The metal to coat an object is connected to the positive terminal of the power supply.

    For example
    To coat a spoon with a layer of copper

    The purpose for electroplating an object:

    • For shiny attractive appearance
    • To prevent object made of iron and steel from rusting

    Please contact Angie @ 96790479 or Mr Ong @ 98639633 if you need Physics Tuition Lower Secondary Science Tuition Singapore.

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