Question

Object made of silver become black with the passage of time.explain

Answer 1

like rust of iron silver also rust when exposed in air and moisture but the difference is that it does not acquire reddish brown color but instead of that they become black.

Answer 2

heya frnd

when metals are exposed to moisture or air they tarnish due to formation of respective oxide . this is due to oxidation reaction

when silver is exposed to air , oxygen molecules react with it and forms respective oxide . so then it turns black due to deterioration of silver

hope it helps u dear