Q.2 What happens when copper powder is heated?
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(a) When copper powder is heated in the presence of air (oxygen), copper reacts with oxygen to form copper oxide. The copper oxide formed is black in colour. The black colour is formed due to the oxidation of copper takes place.Read more on Sarthaks.com - https://www.sarthaks.com/940715/what-happens-when-a-copper-powder-is-heated-in-a-china-dish
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when copper powder is heated in the presence of air (oxygen) copper reacts with oxygen to make copper oxide
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