Question

a shiny brown element x on heating in air becomes black in colour .name the element x and the compound formed .name the process involved​

Answer 1

Answer:

copper (Cu) and the black-coloured compound formed is copper oxide (CuO).

because when it is oxidised or left in air it covers itself with a layer of black substance known as copper oxide.

This is a chemical reaction that is completely natural and causes a dark brown or black layer when you heat your copper cookware.

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