
|
Letter 6675
|
|
|
Trevor Crichton |
I vaguely recall an experiment in one of my son's science books about cleaning pennies with lemon juice. As I recall, the jist of the experiment was to show that the tarnish could be removed from pennies using lemon juice and that the reaction was much faster if a little bit of salt was added to the solution.
The book is long gone, so I don't have the details. Sorry.
Also, in the interest of scientific accuracy - pennies will not have rust. Rust is the product of corrosion of iron and consists of iron oxides and hydroxides. The brown tarnish on pennies will be copper oxides.
|
|
Larry Hanke |

Save
This Page (why?) - Home - ©1995-2009 finishing.com