Question

Shiny brown coin made up of an element turn Black on heating what was the element of the coin and what is the black compound formed​

Answer 1

Answer:

Silver (Ag)

Explanation:

The coin is made of silver which on heating forms Ag2O , a black coloured compound

This also happens when I is kept in contact with air for long periods of time, a reason why we don't use silver coins besides being expensive!!

Hope it helps

Answer 2

Answer:

A “shiny brown coin” which has been made up of an element is copper that can be “turned black on heating”. On heating of the copper metal with the presence of atmosphere and its undergoes the process of oxidation to form black coloured compound it is called as copper oxide.