Question

A shiny brown coloured element "Z" on heating in air becomes black in colour
a)Name the element "Z" and black coloured compound formed.
b) Write it's balanced chemical equation.​

Answer 1

Answer:

element "Z" is copper and the black coloured compound formed is copper oxide. when we heat copper in the presence of oxygen, CuO is formed.

Explanation:

2Cu + O2 ~ 2CuO