Question

Silver ans copper lose their shine

Answer 1

Answer:

Silver and copper lose their shine after some time when left open to the atmosphere or air

Explanation:

$\blacksquare$ Silver and copper lose their shine after some time when left open to the atmosphere or air due to the formation of a new layer on top of them

$\blacksquare$ Silver reacts with sulphur present in the air to form sulphide layer which is a black coloured solid which do not have any shine

$\implies$The chemical reaction is :

$\boxed{ 2Ag + S \rightarrow Ag_2 S}$

$\blacksquare$ Copper reacts with oxygen present in the air to form oxide layer which is also a black coloured layer which do not have any shine

$\implies$ The chemical reaction is :

$\boxed{2 Cu + O_2 \rightarrow 2CuO }$

Answer 2

Answer:

Silver and copper lose their shine after some time when left open to the atmosphere or air due to the formation of a new layer on top of them

Copper reacts with oxygen present in the air to form oxide layer which is also a black coloured layer which do not have any shine

 

Explanation:

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