A student notices that her silver jewellery turned dull and had a grey-black coating over it after wearing…
A student notices that her silver jewellery turned dull and had a grey-black coating over it after wearing for a few months. What results in the change in colour of the silver metal ?
The polish over the jewellery was removed after wearing for a few months.
The jewellery comes in contact with air, moisture and acids and corrodes.
Dust particles over the jewellery change its colour.
Its colour changes due to rusting.
Solution
The jewellery comes in contact with air, moisture and acids and
corrodes.