Electrolysis 

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  • Electrolysis
    • What is it?
      • Electrolysis is the (breaking down) of a liquid by passing an electric current through it.
    • What Electrolysis needs
      • An electrolyte – the liquid that the electric current flows through
      • A negative  electrode   (the cathode)
      • A positive electrode (the anode)
      • A power supply
    • During electrolysis, ions in the electrolyte move to the electrodes and are discharged there.
    • Cations
      • Cations are positively charged ions. They are attracted to the cathode (negative electrode)
      • You should be able to recognize cations from their chemical formulae, which all have a + sign.
    • Anions
      • Anions are negatively charged ions. They are attracted to the anode (positive electrode)
      • You should be able to recognise anions from their chemical formulae, which all have a – sign

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