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Metal extraction - Coggle Diagram
Metal extraction
Electrolysis
Electrolysis is the decomposition of an ionic compound, with the use of an electric current
Ions must be free to move to pass the current, that's why electrolysis only occurs when molten or in solution
There are to carbon(graphite) electrodes, the anode (+) and the cathode (-).
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When in solution, not always are both the parts of the ionic compound decomposed
For the cation, only if the cation is less reactive then hydrogen is the pure metal produced and if not, then hydrogen is produced
For the Anode, if the anion is a halide, then the respective halogen is produced, but with anything else, oxygen is produced.
Carbon extraction
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Iron ore, known as haematite is used in a blast furnace
Coke in the form of calcium carbonate, which decomposes to calcium oxide is used to remove the impurity of silicon dioxide
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