Chemistry, asked by Avikagautam2010, 12 hours ago

Jai was very fond of collecting coins of different metals. One day, he observed that

the colour of silver & copper coins had changed. Explain reason for his observation. ​

Answers

Answered by Beshram
7

Answer:

This is because they came into the contact of moisture and oxygen present in the air . changing of silver to black color is called tarnish and changing of copper to green color is called corrosion and iron's is called rusting.

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