Rubbing it gently with sodium bicarbonate.
I have three items of tarnished silver jewellery
Mix salt and vinigear, and soak it in. But if its valubale, DO NOT USE TOO MUCH SALT.
Yes. Tarnished silver is caused by the reaction of the silver with oxygen.
Tarnished silver is a chemical compound. When silver reacts with sulfur and oxygen in the air, it forms silver sulfide, which gives silver items a tarnished appearance. This compound is not easily removed by physical means and requires chemical cleaning to restore the silver's luster.
Tarnished silver is not a compound. Tarnishing occurs when silver reacts with sulfur compounds in the air or on the skin, forming silver sulfide on the surface of the metal. Silver itself is an element.
compound of silver and oxygen.
http://home.howstuffworks.com/how-to-clean-furnishings3.htm
no
Silver utensils can become tarnished when exposed to sulfur-containing foods like egg yolks. The sulfur in the egg yolk reacts with the silver to create silver sulfide, resulting in the tarnished appearance. To prevent tarnishing, it is best to avoid prolonged contact between silver utensils and sulfur-containing foods.
you use baking powder and coke
Silver jewelry can be cleaned with a mild soap and water solution, or with a silver polishing cloth. For tarnished silver, a paste made of baking soda and water can be effective in removing tarnish. It is important to avoid using harsh chemicals or abrasive cleaners, as they can damage the silver.
a chemical change