4.3.1 The Process of Electrolysis

• What is an anode?

  Positive electrode.
• What is a cathode?

  Negative electrode.
• What is the name of the liquid indicated by letter A?

  An electrolyte.

  
• In electrolysis, which direction do the electrons travel?

  Anode ➔ Cathode
• Which ions are attracted to the negative electrode (cathode) during electrolysis?

  Positive ions.
• Which ions are attracted to the positive electrode (anode) during electrolysis?

  Negative ions.
• What does the term 'inert' mean?

  Something is unreactive, so will not take place in the reaction.
• In electrolysis, is the ion that gains electrons oxidised or reduced?

  Reduced.
• In the electrolysis of molten lead bromide, what is the product at the anode?

  Bromine.
• In terms of electrons, what does oxidation mean?

  Loss of electrons.
• In electrolysis, why does the compound you're trying to separate need to be molten or dissolved?

  So that the ions are free to move around (and go to their respective electrode).
• In electrolysis, which electrode would chloride ions (Cl-) be attracted to?

  Anode.
• Which letter indicates the anode?

  E.

  
• What causes the ions to move to the electrodes?

  Passing an electric current through the electrolytes.
• What produces the elements in electrolysis?

  The discharge of ions at the electrodes.