that occur at both Aluminium is manufactured electrodes. by the electrolysis of a molten mixture of aluminium Extended writing: describe oxide and cryolite using how reactive elements carbon as the positive were discovered by electrode (anode). electrolysis. Construct a timeline. 5.4.3.4 The ions discharged when an Be able to predict the 2 Define the term aqueous. Required practical 9: aqueous solution is products of the electrolysed using inert electrolysis of aqueous Extended writing: describe Investigate what happens electrodes depend on the solutions containing a how an aqueous solution is when aqueous solutions are relative reactivity of the single ionic compound. electrolysed. electrolysed using inert elements involved. electrodes. This should be WS 2.1, 2.2, 2.3, 2.4, Explain why the following an investigation involving At the negative electrode 2.6 atoms could be produced: developing a hypothesis. (cathode), hydrogen is hydrogen produced if the metal is more oxygen. AT skills covered by this reactive than hydrogen. practical activity: 3, 7 and 8. At the positive electrode (anode), oxygen is produced unless the solution contains halide ions when the halogen is produced. This happens because in the aqueous solution water molecules break down producing hydrogen ions and
Aluminium is manufactured by the electrolysis of a molten mixture of aluminium oxide and cryolite using carbon as the positive electrode (anode). that occur at both electrodes. Extended writing: describe how reactive elements were discovered by electrolysis. Construct a timeline. 5.4.3.4 The ions discharged when an aqueous solution is electrolysed using inert electrodes depend on the relative reactivity of the elements involved. At the negative electrode (cathode), hydrogen is produced if the metal is more reactive than hydrogen. At the positive electrode (anode), oxygen is produced unless the solution contains halide ions when the halogen is produced. This happens because in the aqueous solution water molecules break down producing hydrogen ions and Be able to predict the products of the electrolysis of aqueous solutions containing a single ionic compound. WS 2.1, 2.2, 2.3, 2.4, 2.6 2 Define the term aqueous. Extended writing: describe how an aqueous solution is electrolysed. Explain why the following atoms could be produced: hydrogen oxygen. Required practical 9: Investigate what happens when aqueous solutions are electrolysed using inert electrodes. This should be an investigation involving developing a hypothesis. AT skills covered by this practical activity: 3, 7 and 8.
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