Science, asked by jassi5267, 10 months ago

Qu7. The process due to which black layer on silver and green layer on copper is called

Answers

Answered by ssampu4141

Answer:

this process is called as oxidation

Answered by Wolvarine2004

Answer:

the process is called Tarnishing

Explanation:

When silver is exposed to sulfur-containing gases in the air, it discolors and then darkens as it reacts with the gas to form a surface layer of tarnish. This process is called Tarnishing

Copper combines with oxygen, carbon dioxide and water to form basic copper carbonate. This green layer is basic copper carbonate and this phenomenon is corrosion. Copper metal when exposed to air turns green in color due to corrosion.

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