There is 97.5 percent zinc in a penny and 2.5 percent copper
It's just a penny, spend it.
From 1982 to date all Lincoln pennies are copper plated zinc, the 1993-D is just a penny.
All 1983 Lincoln cents are Zinc. Spend it.
All modern pennies are made out of zinc. If you are thinking of a 1943 steel penny that is a very common coin that is worth at most a dollar. If you have a 1942 steel penny that is a misprint error made by the mint and is very valuable. (be sure to have it certified by multiple sources including NGC) I hope that this helps.
Zinc cents were first struck in mid-1982 so your coin is an ordinary bronze cent that's either been plated or somehow discolored. In either case the damage means it's only worth a penny.
Midway through 1982, the composition of the US penny changed from 95% copper and 5% zinc to 97.5% zinc and 2.5% copper (in the form of a coating of pure copper over a core of zinc).
zinc is 97.5% of the penny and copper is 2.5% of the penny
A penny contains 97.5% zinc. A nickel contains no zinc at all.
Zinc
You can tell if a penny is made out of zinc or copper by the date on the penny. If the date is before 1982 then the penny is 95% copper. Pennies dated 1983 or later are 97.5% zinc with a thin copper coating.
Modern US cents are made of copper plated zinc. Starting midway through 1982 the penny switched from bronze to copper plated zinc. So if you have a penny dated 1983-present you for sure have a penny with zinc on the inside.
no
zinc
The zinc in the core of the penny will react in a single replacement reaction with the hcl while the copper will not theoretically react and will be left behind. So if you soak a penny, with cuts in it for the hcl to reach the zinc, will leave behind a copper shell. -may not be 100%correct as i am not an expert just taking high school chem.
A penny is both made of copper and zinc
99.2% Zinc .008% copper
Copper pennies (95% copper, 5% zinc) weigh 3.11 grams. Modern zinc pennies (97.5% zinc, 2.5% copper) weigh 2.5 grams.