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It is due to the formation of silver sulphide ,as a result of the reaction between silver and hydrogen sulphide in the air.

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12y ago

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Why is chemicals in an anti spot cream react with a silver necklace turning it black helpful?

naturally occurring sulfur oxide causes silver to turn black over time. The concentrated sulfur, about 6% in Spot treatments, just increases the speed of this chemical reaction. Toothpaste with Zinc and silver-cleaner cloth takes care of it.


What time zone is silver formed?

Ummm... not quite sure what you mean, silver can be found all over the world.


Why silver metal doesn't combine easily with oxygen but silver jwellery tarnishes after some time?

... because polluted air affects silver's top surfaces, over time it will eventually start to rust and peel off. silver is put behind mirrors to reflect while glass prevents it from tarnishing.


Does the element silver react with oxygen and water?

Silver does not react with oxygen or water at room temperature. However, over time, silver can tarnish due to reactions with sulfur compounds present in the air, forming a layer of silver sulfide on its surface.


Why is silver tea getting green with tarnish over time a chemical change?

Silver tea gets green with tarnish due to a chemical reaction between silver and sulfur compounds in the air, forming silver sulfide. This process alters the composition of the silver, resulting in a new substance with different properties. Unlike physical changes, which do not affect the chemical identity of a substance, tarnishing is irreversible and signifies a chemical change. Thus, the green tarnish is a clear indication of a chemical transformation occurring over time.

Related Questions

Why do silver coins become black on keeping for long time?

Silver oxidises over time making it look black. Moisture from the human body can speed up this process


Silver plus oxygen equals?

When silver reacts with oxygen, it forms silver oxide (Ag2O). Silver oxide is a brownish-black compound commonly produced as a thin layer on the surface of silver objects over time.


Why do silver articles become black after some time when exposed to air?

Silver articles turn black over time when exposed to air due to a chemical reaction with sulfur in the environment, forming silver sulfide. This is known as tarnishing. It can also be accelerated by factors like humidity and exposure to certain chemicals. Regular cleaning and storage in airtight containers can help prevent tarnishing.


What does it mean when your earrings turn black?

silver will tarnish over time, and that's normal. just clean it occasionally and make it sparkle :)


Why does some silver jewelry turn black and some doesn't?

Silver jewelry may turn black due to oxidation when it comes in contact with air and sulfur-containing substances. This reaction forms silver sulfide, resulting in a tarnished appearance. Silver jewelry that is plated with rhodium or made with high-quality silver alloys may be less prone to tarnishing, while pure silver or sterling silver jewelry is more likely to tarnish over time.


Does silver turn yellow over time?

Yes, silver can tarnish and turn yellow over time due to exposure to air and certain chemicals.


Why do silver coins turn black when kept for a longer period of time?

because of sulphide coating on silver


Why silver teapot is preferred to black teapot?

A silver teapot is often preferred over a black teapot for several reasons, including its aesthetic appeal, which adds elegance to tea service. Silver has natural antibacterial properties and excellent heat conductivity, ensuring that tea stays warm longer and is brewed evenly. Additionally, silver teapots can develop a beautiful patina over time, enhancing their charm and character, whereas black teapots may not offer the same visual or historical appeal.


You wore your new silver bracelet in the jacuzzi and it went black why is this?

The chemicals in the jacuzzi water will turn silver to black. Next time, take off your silver jewelry before entering a spa or pool.


Is silver corrosive?

Silver is a noble metal and is not corrosive in the same way as iron or steel. However, silver can react with sulfur compounds in the air to form silver sulfide, a black tarnish that can appear on the surface of silver objects over time. Regular cleaning and maintenance can prevent tarnish on silver items.


Will 925 silver turn colors?

Yes, 925 silver can tarnish and turn black or develop a yellowish hue over time due to exposure to air and moisture. Regular cleaning and proper storage can help maintain its shine.


Why is chemicals in an anti spot cream react with a silver necklace turning it black helpful?

naturally occurring sulfur oxide causes silver to turn black over time. The concentrated sulfur, about 6% in Spot treatments, just increases the speed of this chemical reaction. Toothpaste with Zinc and silver-cleaner cloth takes care of it.