From Atoms to Materials

Extension carbon carbon oxygen oxygen metal metal carbon reduction 碳還原法 Carbon reduction of copper oxide and iron oxide can be carried out using a Bunsen flame, which can be as hot as 1500 °C. heat For carbon reduction to take place, metal oxides need to be heated to certain temperatures. Copper oxide needs a temperature of about 600 °C. Iron oxide requires a temperature as high as 1000 °C, while zinc oxide needs an even higher temperature. Snapshot Mining in Hong Kong An iron mine* in Ma On Shan operated from 1951 to 1981. You may search for information about this mine, e.g. its location, its ore quality, why it closed, etc. mine 礦場 In Experiment 13.5B , we see that copper and iron can be extracted by heating their oxides with carbon. At high temperatures, carbon removes the oxygen from the metal oxides. Carbon dioxide and the metals are the products of this reaction. This method is called carbon reduction . It can be represented by the following word equation: metal oxide + carbon metal + carbon dioxide Some metals (e.g. copper and iron) can be extracted by heating their oxides with carbon. This method is called carbon reduction. 70 © United Prime Educational Publishing (HK) Limited 2024 All rights reserved; no part of this publication may be reproduced, photocopied, recorded or otherwise, without the prior written permission of the Publisher. Sample