Question

9
HOTS A shiny brown coin made up of an element
turned black on heating. What was the element of
the coin and what is the black compound formed?​

Answer 1

Element is copper.
Black compound Is oxide of copper.

Answer 2

Answer:

element is copper and copper is in shiny Brownian colour

Explanation:

when we heat up in air it change it colours.and black in colour and this black compound is cupric oxide