The objectiveCover with a steel nail copper foil, a chemist working?
Not at all! A simple mixture and the metal is deposited alone.
You need
” 2 steel nails
” Sandpaper
” 4 copper coins (5 cents)
” Vinegar
” Salt
” Spoons
” Glass
Shine the nail1 / Rub a nail with sandpaper. It must be brilliant.
Saltwater2 / In the glass, [...]
more→