No blue tint when I look at it completely silver no chips or were spots to show that its plated I also checked rim of the coin all silver in color
It has been plated. This was/is a very common school chem lab experiment. The sample is cheap and when they're done, kids get to take home the experimental results.
Yup, plated Very common in science experiments in school and many third party companies even today plate coins to sell.
Correct.. The aluminum Cent is much lighter than a copper Cent. All have been accounted for and will never be found again. There are none in circulation.
No there are still about 10 1974 aluminum cents missing. Not going to find them in circulation though, Congressmen have them.
You're right. I have a 1972 penny my sister plated with zinc when she was in college. She gave it to me over 35 years ago. Today the luster is gone so it just looks like a very nice steel cent. They're easy to make and they fool too many beginning collectors.