Question

A shiny brown coih made up of an element turned black on heating Predict the element present
in the coin name the black compound formed ? Write the chemical reaction involved.​

Answer 1

Answer:

When a shiny brown coin which is made of Copper (cu) is heated, it turns black compound which is known as copper oxide (CuO). This happens because copper gets oxidized with the contaminated by oxygen (O2) which is present in the air.

Answer 2

When a shiny brown coin which is made of Copper (cu) is heated, it turns black compound which is known as copper oxide (CuO).

But it can be possible if the copper is heated in the presence of air which constitutes oxygen.

Hope it helps ☺