Grade 9 students studying Electrochemistry
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Electrochemistry is a branch of Chemistry that deals with the study of the production of electricity from the energy that is released during chemical reactions. Grade 9 students learnt this concept by setting up an experiment in the chemistry lab. They used aqueous solution of sodium chloride as an electrolyte and different combinations of electrodes (Copper-copper, zinc-copper, graphite- copper) and then tested the voltage across the two terminals with the help of a multi meter and voltmeter. They found out that, when the difference is more in the reactivity of the two electrodes, higher will be voltage generation.
