Question

When copper powder is heated strongly in air, it forms copper oxide. Write a balanced chemical equation for this reaction. Name

1. substance oxidised, and
2. substance reduced.

Answer 1

When copper powder is heated strongly in air, it reacts with oxygen to form black copper(II) oxide.

The balanced chemical equation is:

\[\ce{2Cu_{(s)} + O2_{(g)} ->[Heat] 2CuO_{(s)}}\]

1. Copper (Cu) 
2. Oxygen (O₂)