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Chemistry coursework Obtaining Zink Oxide from Calamine Jacob Confino 11d Planning Introduction: Before zinc was recognized as an element zinc ores were used for making brass, which was a mixture of copper and zinc. Calamine is a mineral, which is mainly composed of the compound calamine, which has the formula ZnCO3. The metal zinc is extracted industrially. If you heat calamine it decomposes into zinc oxide and also carbon dioxide. This sort of reaction has a reaction and its formula is: ZnCO3(s) ZnO(s) + CO2(g) This gives you the calculation of the theoretical mass of zinc oxide, which is obtainable if you heat the mass of calamine. I am going to heat up gram by gram of calamine and see how the reaction changes as the amount of calamine is added. I am going to start with 1 gram in a boiling tube, then I will heat it until it changes colour to yellow (which shows that the...

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