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20 January 2014. Extracting Copper. Learning Objective Describe the extraction of copper. Some. explain how copper is extracted from its ores. (B). Most. All. describe how copper is extracted from its ores. (C). state that copper is mined in the form of its ores. (D).
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20 January 2014 Extracting Copper Learning Objective Describe the extraction of copper. Some • explain how copper is extracted from its ores. (B) Most All • describe how copper is extracted from its ores. (C) • state that copper is mined in the form of its ores. (D)
Describe the extraction of copper. Starter Where do metals come from? Students name as many metals as possible and state where they come from. All – state that copper is mined in the form of its ores.(D) Most – describe how copper is extracted from its ores. (C) Some – explain how copper is extracted from its ores. (B)
What is reduction? Metals are often found combined with oxygen as oxides. To obtain the metal, the oxygen must be removed. The removal of oxygen from a substance is called reduction. reduction metal metal oxide (in ore) Carbon can be used to extract metals by reduction. carbon monoxide + + lead oxide carbon lead + + PbO C Pb CO In this reaction, the carbon removes oxygen from lead oxide. This occurs because carbon is more reactive than lead. The addition of oxygen to a substance is called oxidation.
Describe the extraction of copper. Getting copper from copper carbonate. Malachite (copper carbonate) is a green rock that is dug out of the ground. All – state that copper is mined in the form of its ores.(D) Most – describe how copper is extracted from its ores. (C) Some – explain how copper is extracted from its ores. (B)
Describe the extraction of copper. Heat copper carbonate (green) and we get copper oxide (black). Heat copper oxide (black) with carbon and we get copper metal. We say that the carbon “reduced” the copper oxide to give copper and carbon dioxide. All – state that copper is mined in the form of its ores.(D) Most – describe how copper is extracted from its ores. (C) Some – explain how copper is extracted from its ores. (B)
Describe the extraction of copper. Copper carbonate Copper oxide Carbon dioxide + CuCo3 CuO + CO2 This is a thermal decomposition reaction. All – state that copper is mined in the form of its ores.(D) Most – describe how copper is extracted from its ores. (C) Some – explain how copper is extracted from its ores. (B)
Describe the extraction of copper. CuCo3 CuO + CO2 This is a thermal decomposition reaction. 2CuO + C 2Cu + CO2 This is the reduction of copper (II) oxide by carbon. Copper (II) oxide Carbon dioxide + carbon Copper + All – state that copper is mined in the form of its ores.(D) Most – describe how copper is extracted from its ores. (C) Some – explain how copper is extracted from its ores. (B)
