Question

Copper powder is taken in a china dish and heated over a burner.Name the product formed and state its colour. Write the chemical equation for the reaction involved.

Answer 1

When copper powder is heated in air, it reacts with oxygen to form copper(II) oxide.
Product: Copper(II) oxide (CuO)
Colour: Black
Chemical equation:
$2\text{Cu} + \text{O}_2 \rightarrow 2\text{CuO}$