Question

Why do silver articles turn black when kept in the open for a few days? Name the

phenomenon involved.​

Answer 1

Answer:

Silver article turns black when kept in the air because silver reacts with sulphur compounds such as hydrogen sulphide (H2S) present in air and forms silver sulphide.

The phenomenon is called corrosion. For silver particularly, it is called tarnishing of silver.

Answer 2

Answer:

Silver article turns black when kept in the air because silver reacts with sulphur compounds such as hydrogen sulphide (H2S) present in air and forms silver sulphide.

Phenomenon:

Corossion

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