Give reason silver pieces of jewellery tarnish when exposed to air
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Explanation:
air is having some particles to compose to air like silver jewellery is composed to air it doesn't react with air
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Answer:
Explanation:
Sterling silver is a mixture of metals with at least 92.5% silver and 7.5% other metals. And it is the other metals, usually copper, that oxidise in the air resulting in the build up of a tarnished layer on sterling silver jewelry.
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