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→Method
#Attach a [[Direct Current|direct current]] [[Power Pack|power pack]] to the [[electrode]]s using wires and crocodile clips.
#Set the [[Potential Difference|potential difference]] to 4 [[Volt]]s.
#Record your [[observation]]s of changes at each [[electrode]]. You may also use a [[pH indicatorIndicator]] paper next to the [[anode]] but above the [[solution]] and note any colour change.
#After 5 minutes turn off the [[Power Pack|power pack]] and remove the [[cathode]] to [[observe]] whether any changes have taken place.
#Repeat this experiment for the following [[solution]]s; [[Copper (II) Sulphate]], [[Sodium Chloride]] and [[Sodium Sulphate]].