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Tarnish (AKA toning) is caused by exposure to air, chemicals, and/or dirt & oils from human fingers. A chemical reaction causes oxidation of the metal and the change in color. The same thing happens to silver coins. OMG

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โˆ™ 2008-10-22 13:31:53
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Q: Why do pennies tarnish?
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Related questions

Do pennies tarnish or rust?

Tarnish.


What removes tarnish on pennies?

darker soft drink will remove the tarnish form the pennies


What tarnishes pennies?

Oxidation and corrosion tarnish pennies


How do you tarnish pennys?

Damp conditions tarnish copper and bronze pennies quickly. Bleach can also tarnish them.


How do pennies get so dirty?

Yes, the tarnish is copper oxide. But actually the tarnish is not from when the pennies are made (brand new pennies are shiny); the tarnish is from the copper of the penny reacting with the oxygen in the air over time.The article I have given a link for is quite funny, but it also very informative as regards to pennies, so you might want to check it out.plz decuse the reason why tarnish gets on pennies


What metal has green tarnish as it ages Silver or other?

Pennies and the Statue of Liberty are both made of copper but the Statue of Liberty is now green just like pennies become, although they are shiny when they're new. So copper is the metal that has green tarnish.


How does acid clean pennies?

By removing some of the copper on the tarnished penny. when tarnish sets on a penny it becomes dull and loses it shine .the acid which acts like a cleanser takes off the build up of tarnish and brings back the shine of the copper that pennies are made of


Do all pennies regain their luster?

They are copper and if soaked in vinegar the tarnish will come off and they will shine again.


What kind of dirt gets onto pennies?

Bacteria and oils from being handled by people. Tarnish on the copper part of the penny.


What is the purpose of cleaning pennies with vinegar?

Vinegar is a mild acid. It will remove light oils, dirt and tarnish without significant damage to the base metal.


How do you remove tarnish from a penny?

it depends on what you try to clean it with, things like lemon juice may work but im doing an experiment to find out what cleans pennies the best Im doing one too, and I read that pennies lose tarnish faster when you mix salt in lemon juice, or any other mild acid. It creates a sort of hydrocloric acid that cleans the tarnish right off. It also explains why your stomache hurts if you chug too much beer salt x.x -Aflay


Does helium rust or tarnish?

Tarnish


What makes a penny tarnish?

The copper in the pennies reacts with the air and forms copper oxide, which is greenish in color. It is a slow process and can be reversed by cleaning the penny with an acidic solution.


What part of speech does tarnish play in - the tarnish can be easily removed with polish?

In that sentence, "tarnish" is a noun.


What rusts a penny?

Pennies are made of zinc plated with copper. Copper reacts with oxygen and water to form copper oxide. This is the tarnish you see on pennies that have been in damp conditions. The only U.S. coins that can truly rust are the 1943 zinc coated steel cents.


Do gold coins change or tarnish?

No, gold does not tarnish.


What causes gold to tarnish?

gold doesn't tarnish.


Which metals tarnish?

Copper, silver, and brass tarnish.


What part of speech does tarnish play in the sentence The tarnish can be easily removed with polish?

tarnish is being used as a noun.


What part of speech is tarnish in the sentence Silver will tarnish if it is not polished often?

The word "tarnish" in the sentence "the silver will tarnish if it is not polished often" is a verb. It is describing the action of the silver in the sentence.


Does silver tarnish?

yes it can tarnish very well if not protected


What causes tarnish?

Tarnish is oxidation caused by exposure to air.


What is another word for tarnish?

Another word for tarnish is destroy.


Does gold tarnish and why?

No gold does not tarnish. however, it is quite soft.


Does lithium rust or tarnish?

Tarnish. Rust is for iron and its alloys alone.