Question

A shiny brown coloured element x on heating in air becomes black in colour can you predict the element x and the black coloured substances formed how do you support your predictions

Answer 1

Element X=Copper(Cu)
On heating,a layer of COPPER OXIDE forms over it giving it black colour,
Therefore, Element Y=Copper oxide(CuO)

HOPE IT HELPS!!!
MARK IT BRAINLIEST!!! U WILL TOO GET POINTS FOR IT!!!
HAVE A GREAT DAY!!!
THANKS!!!