A student has been collecting silver and copper coins one day she obse

1.	A student has been collecting silver and copper coins one day she observe a black coating on silver and a green coating on copper coins which chemical phenomenon is responsible for these coating write the chemical names of black and green coatings
Answer» Answer: this due to OXIDATION of COPPER and silver silver oxide and copper oxide Explanation: When exposed copper will REACT with atmospheric oxygen .. 2Cu + O₂ ⇒ 2CuO THIS GIVES US THE GREENISH OXIDE OF COPPER. When exposed silver will react with atmospheric oxygen .. 2Ag + O₂ ⇒ Ag₂O THIS GIVES US THEBLACK OXIDE OF SILVER.

A student has been collecting silver and copper coins one day she observe a black coating on silver and a green coating on copper coins which chemical phenomenon is responsible for these coating write the chemical names of black and green coatings

Answer»

Explanation:

When exposed copper will REACT with atmospheric oxygen ..

THIS GIVES US THE GREENISH OXIDE OF COPPER.

When exposed silver will react with atmospheric oxygen ..

THIS GIVES US THEBLACK OXIDE OF SILVER.