Question

When copper powder is heated , it turns ___________ due to the formation of copper

oxide​

Answer 1

Answer:

Explanation:

Copper reacts with oxygen in the air upon heating and forms copper oxide. The black colour is due to the formation of this copper (II) oxide. The copper oxide thus formed can be reduced to its basic metal form by reducing it with hydrogen or carbon monoxide.

Answer 2

$Black \: Colour.$

Explanation:

When the Copper is heated in the presence of Air, it turns Black colour due to the formation of Copper Oxide.