Yes.
i think the tarnish will come of the tarnish penny
In the periodic table of Einstein the penny is cleaned by the fruit acid dissolving the copper oxide tarnish the tarnish is then washed away which then shows the true beautiful penny beneath! Or just use sand paper.Also when the acid reacts with the tarnish or whatever you have on the penny the acids reaction is it almost like eats off the tarnish and cleans the penny!
tarnish :p
leave it in water 4 a long period of time
With organic matter from fingers (skin oil) sneezing, etc.
Lactic acid cleans the tarnish from copper
Physical change
Lactic acid cleans the tarnish from copper
Soda pop is a mild acid, because of dissolved carbon dioxide. Acid dissolves the copper oxide tarnish that darkens the penny's color.
The US Mint never issued a 1963 golden penny. Sometime the copper cent can tarnish to a golden hue if it is in the right environment.
Bacteria and oils from being handled by people. Tarnish on the copper part of the penny.
i found a gold penny once. try scratching off the gold, like i did. the color scratched off easily and the result is a normal penny. But i dont know how they make gold pennys, or the reason More Information: A penny can tarnish to a golden hue. The environment it is in can cause it to tarnish different colors. For example, gold color, blue color, black color, shades of red color. A penny could be gold plated but it would destroy its numismatic value.