No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing since 1989

-----

Help me remember an old science project

I was working with my niece on figuring out a cool science project. And I remembered one I did in High school that destroyed a penny (made the penny very thin). We soaked the penny in a substance and now I can't remember what it was. What chemical, house hold product...etc.. what will actually make a penny so thin that it can crumble. I would really want this as a project for my niece.

Diana, 24

Diana Caicedo
- Hialeah, Florida, USA
2003

I haven't done that experiment, but muriatic acid ⇦ this on eBay or Amazon [affil links] will dissolve the zinc core of a penny, and leave behind the copper plating, as will lye (Drano [affil links]). I don't know which one will work best, but both are quite dangerous to fool around with.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2003

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: