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Electrolysis - The aim of this experiment is to prove that by passing electric current through an aqueous copper sulphate solution changes the mass of each electrode. The anode's mass will increase and the cathode's mass will decrease.
Member rating: No Rating | Words: | Submitted: Mon Oct 13 2003
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Solids, e.g. metals conduct electricity; the current is carried by electrons. The battery forces the electrons through the conductor. The metal may change for example it may become hot, but when the flow of current is stopped the metal is just as it was before. When a metal conducts electricity no chemical reactions occur. However when a molten salt conducts electricity, chemical changes occur, and new substances are formed. This diagram shows an experiment, which aims to find out what happens when a direct electric current passes through a molten salt. A salt is a compound of a metallic element with a non-metallic or elements. Lead (II) is a salt with a fairly low melting point. The container through which the current passes is called a cell. The rods, which conduct electricity into and out of the cell, are called electrodes. The electrode connected to the positive terminal of the battery...
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