Question

Astha has been collecting silver coins and copper coins.

One day she observed a black coating on silver coins and a green coating on copper coins.

Which chemical phenomenon is responsible for these coatings?

Write the chemical name of black and green coatings

Answer 1

the chemical formula is known as oxidation.
black coating on silver is called silver sulphide and the green coating on copper is called copper carbonate.

Answer 2

Hi dear...!!!

Let's try to find out ur ans...


This is due to corrosion or rusting on metal and the substance is rust...!!

Corrosion occurs due to oxidisation of metal..!!!

Hope it hlps...

have a good day dear..!!!

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