Question

A shiny brown colour element 'x' on heating in air becomes black in colour. Name the element 'x' and the black coloured compound formed.

Answer 1

Explanation:

copper oxide

Copper is the brown coloured element X which on heating in air becomes black coloured compound copper oxide.

Answer 2

Answer:- Copper Oxide

'X' is copper (Cu) and the black-coloured compound formed is copper oxide(CuO). The equation of the reaction involved on heating copper is given below: see the attached photo

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