on heating copper powder in air in a china dish ,the surface of copper powder becomes black
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HI
⭐️The surface of copper powder becomes black on heating since :
⚪️ Oxygen is added to copper and,
⚪️ Copper oxide is formed which is black in colour.
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Answer:
On heating the copper powder in air, a black colour substance layers over the copper powder, which is mainly due to surface oxidation and the formation of a compound known as copper oxide.
This follows the basic chemical process of oxidation where copper reacts with oxygen present in the air on heating in order to form copper oxide.
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