There are two electrodes in an electrolysis solution: the positive and the negative electrode. The reaction that happens at each electrode is different. When the compound to be electrolyzed is in solution with the electrical current passing through it, the compound’s constituents become ionized (separate into positively and negatively charged ions). Positively charged ions (metals and hydrogen), are attracted to the negative electrode (the cathode), where they receive electrons (a process known as oxidation). Negatively charged ions are attracted towards the anode (the positively charged electrode), where they give up electrons (reduction).
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