if you collect silver coin qnd copper coin after some day a black coating on silver coin and a green coating on copper coin which
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because of reaction
and it is corrosion
and it is corrosion
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this is because of process called corrosion.
The process occurs when any substance say it as metal comes in contact with moist,acid ,etc.
1)silver becomes black because of the formation of silver sulphide .
2) Copper becomes green because of formation of copper carbonate..
hope it helps
The process occurs when any substance say it as metal comes in contact with moist,acid ,etc.
1)silver becomes black because of the formation of silver sulphide .
2) Copper becomes green because of formation of copper carbonate..
hope it helps
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