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

✔✔HERE IS YOUR ANSWER✔✔

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?

ans-⭐⭐ CORROSION.⭐⭐

Write the chemical name of black and green coatings?

ans- BLACK COATING... SILVER

GREEN COATING....COPPER

Answer 2

Answer:

Explanation:The phenomenon responsible for the changes seen is CORROSION. Corrosion is the deterioration of metals as a result of chemical reactions between the metal and its environment! The black coating is of Ag2S or silver sulphide. Hope it helps!