AQA practicals Chemistry Рelectrolysis 

Investigate what happens when aqueous solutions are electrolysed using inert electrodes.
This should be an investigation involving developing a hypothesis.

Use of appropriate apparatus and techniques for conducting and monitoring chemical reactions.
Use of appropriate apparatus and techniques to draw, set up and use electrochemical cells for separation and production of elements and compounds.
Use of appropriate qualitative reagents and techniques to analyse and identify unknown samples or products including gas tests for hydrogen, oxygen and chlorine.

Use scientific theories and explanations to develop hypotheses.
Plan experiments or devise procedures to make observations, produce or characterise a substance, test hypotheses, check data or explore phenomena.
Apply a knowledge of a range of techniques, instruments, apparatus, and materials to select those appropriate to the experiment.
Carry out experiments appropriately having due regard for the correct manipulation of apparatus, the accuracy of measurements and health and safety considerations.
Make and record observations and measurements using a range of apparatus and methods.

Typical questions