2007-01-23 13:23:45 · 9 answers · asked by Minno 2 in Science & Mathematics ➔ Other - Science
Any thing with acid in it; lemon, pineapple, lime. Use the juice from the skin too very effective
2007-01-23 13:28:00 · answer #1 · answered by Zhughu 2 · 0⤊ 0⤋
Get a plastic container.
Put in 1 teaspoon of cream of tartar, 1 teaspoon of washing-up liquid, and a little cold water. Stir it up.
Add half a pint of scalding water, stir, add the pennies, and after a minute take them out and rinse them.
2007-01-24 02:00:10 · answer #2 · answered by bh8153 7 · 0⤊ 0⤋
I'd try tomato juice. I've cleaned my copper bottom pots and pans with tomato paste before, worked pretty good.
2007-01-23 13:29:31 · answer #3 · answered by sparkie 6 · 0⤊ 0⤋
lemon juice with a tiny bit of salt*
2007-01-23 13:34:13 · answer #4 · answered by baby oh's 3 · 0⤊ 0⤋
salt and white vinegar should do fine
(don't "clean" a valuable penny though)
2007-01-23 13:26:48 · answer #5 · answered by Anonymous · 0⤊ 0⤋
lemon
2007-01-23 13:26:10 · answer #6 · answered by tabulator32 6 · 0⤊ 0⤋
Coca-Cola.
Serious.
let them soak for a while and you'll see.
2007-01-23 13:31:20 · answer #7 · answered by Abaris 3 · 0⤊ 0⤋
grape fruit
2007-01-23 13:26:24 · answer #8 · answered by Jade D. 4 · 0⤊ 0⤋
pepsi
2007-01-23 13:30:44 · answer #9 · answered by Anonymous · 0⤊ 0⤋