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The non-metal ions lose electrons to the anode (this is called oxidation) and are discharged as non-metal atoms which often combine to form molecules. In this way, elements that are present in ionic compounds can be separated by electrolysis. This method is used for the extraction of some metals from their ore.See for example lead bromide, magnesium chloride, potassium chloride, sodium chloride and zinc chloride.he non-metal ions lose electrons to the anode (this is called oxidation) and are discharged as non-metal atoms which often combine to form molecules. In this way, elements that are present in ionic compounds can be separated by electrolysis. This method is used for the extraction of some metals from their ore.
Mining produces a mixture of rocks that contain ore and other rocks that do not contain ore. So, the ore must be separated from unwanted rocks. Then, the minerals need to be separated out of the ore. The work is still not done once the mineral is separated from the unwanted materials. mineral deposit that contains enough minerals to be mined for profit is called an ore. Ores are rocks that contain concentrations of valuable minerals. The bauxite shown in the Figure 3.26 is a rock that contains minerals that are used to make aluminum.