Question

vessel made of metal lose their shine with time. wh​

Answer 1

Answer:

This is due to the process of corrosion or tarnishing. In this process, the metals reacts with elements in the environment like oxygen, carbon or sulphides to form hrdroxides, oxides, sulphides or carbonates. These compounds formed are dull and responsible for the loss of the shinny nature of the vessels.

Answer 2

Answer:

because metal reacts with the some gases present in air and forms a new compound which effects in shine of metals

Explanation:

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