Question

cu does not burn but is coated with black copper oxide how copper have a green layer so here why they dsaid black oxide​

Answer 1

see the black oxide is formed when copper reacts with oxygen but when copper reacts with carbon dioxide present in air then it forms basic copper carbonate which is green in colour

yes copper does not burns but when kept in aur it reacts oxygen to form copper oxide

I hope it is clear..

Answer 2

Answer:

hi ruhi answer any of my questions if you want to chat