Question

a silver jewellery turns dark over a period of time why​

Answer 1

Answer:

It turns dark because it undergoes corrosion.

Silver reacts with sulphur and other water molecules present in air due to which it corrodes and forms a layer of Silver Sulphide which is black in colour.

Answer 2

Answer:

Silver turns black over time because of its exposure to moisture. If you wish to keep your silver jewellery shining for a long time take care that your jewellery pieces do not come in contact with deodorant, cosmetics, moisture, soaps and sulphur compounds.

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