When any type of metal is affected by heat, moisture, or gases, the metal begins to tarnish. This is a chemical reaction to whatever substance the metal has come in contact with and is able to react with it.
Tarnish, which appears as black or brown streaks and patches on silver ware, is silver sulfide, a compound formed when silver interacts with sulfur in the air. Sulfur is a byproduct of burning fossil fuels and was a constant concern of homemakers when houses were heated by coal furnaces, and silver items not used on a frequent basis were polished at least once a month to keep their shine.
Why does metal Tarnish??
Tarnish: CHANGE COLOUR
Because of the air and water ( mostly rain ) and for example bikes tarnish because it is mostly left outside. If it was left inside it will eventually tarnish but take longer to. If you are wondering why cars don't usually tarnish it is because they are coated with a special metal thing to make it last longer. Also metals take longer to tarnish than others, this is why if you are getting married supposing you stayed together for life you need either gold, silver or platinum because it doesn't hardly ever tarnish. Potassium is the quickest to tarnish.
Potassium...............................................................................................Platinum
MOST REACTIVE LEAST REACTIVE
Copper tarnishes because it just does. I know, not very helpful.
im in my sceince lesson now and its a layer of corrosion that causes the metal to rust or errode
Brass will tarnish more than nickel does. In order to prevent this, make sure you polish and clean your brass belongings.
go ask the being that created the universe
Tarnishing involve a chemical reaction (with oxygen, sulfur, etc.).
yes
No.
Oils and chemicals in perfume can cause tarnish on silver or silver-plated jewelry, it can also damage other types of jewelry; porous stones and gems and costume jewelry. Tarnish can be removed from silver jewelry with a silver polishing cloth or ultrasonic jewelry cleaning machine.
All metals in jewelry are alloys, they will last longer than you will live, your children will live, your grandchildren will live. They will likely last thousands of years, unless seriously mistreated. Some jewelry alloys tarnish but they can be cleaned and look good as new.
Tarnish
Metals need to be protected against rust and tarnish because rust and tarnish eat metals.
No
No.
No. Gold itself doesn't tarnish.
tarnish
yes it does people
Oils and chemicals in perfume can cause tarnish on silver or silver-plated jewelry, it can also damage other types of jewelry; porous stones and gems and costume jewelry. Tarnish can be removed from silver jewelry with a silver polishing cloth or ultrasonic jewelry cleaning machine.
Well, the gold it is tarnish natural; but is it's more tarnish if it's mix with silver or brance or lead or cooper.
it will tarnish
if gold comes in to contact with any reactive substance (bromine is one example) it will cause it to tarnish
The tarnish from jewelry may grey the clothing. By turning the item to the wrong side, and flush the area with cool water to force the metallic particles out of the fibers, and wash as normal.
A great way to remove tarnish from jewelry is by dipping it in a solution of water, mild soap and a few drops of ammonia. Brush it with a soft brush and rinse under warm water and let it dry. You have to take different measure when cleaning jewelry with gemstones on it.
Jewelry made of Pewter does not change color as it is a non tarnish metal when it is hit by air or moisture. So except for its slightly dull finish is and non tarnish properties it is very similar to silver.