The vinegar was so strong that it clean the penny. Vinegar is acedic acid. The penny has oxidized in air and the acid removes the oxidization from the penny, making the copper shiny again.
Vinegar contains Acetic acid that reacts with the copper in the penny.
vinegar has an acid in it that dissolves microscopic particles only found on certain matals.
If you have any tarnished pennies in your penny jar, you can easily clean them in vinegar. If you leave your pennies in white vinegar and salt for about 30 minutes and they will come out shiny and pretty clean. Be sure to rinse the vinegar off.
the salt will dissolve in the vinegar and the penny will get really clean well if it dirty
I turned white vinegar green by putting a 1969 penny in it for two weeks in the refrigerator. It turned green because of the copper in the penny reacting with the vinegar in a process called oxidization. The green was the copper oxide formed when the copper in the penny oxidized in the vinegar.
White vinegar does a fine job.
Vinegar is acid.. Soda is sugar and carbonation.
The penny will get clean i did that in science class and in less than 2 minutes the penny became clean
vinegar is acetic acid so it 'eats' away the coating of the penny cleaning it.
Clean it, to eliminate what? Grease and oil? 409. Cuprous or Cupric Oxide? Salt and vinegar.
it's actually vinegar & salt because vinegar is an acid & salt is an abrasive.