Explore the World of PH

http://www.miamisci.org/ph/phpanel.html

Click on "expand" and check out the cleaning pennies virtual lab. Cool! Also, the PH Panel on the main page is neat. If you click on the various items, like lemon juice, borax, and so forth, you are able to view what the PH is for each. This is a neat site to learn more about PH factor, bases, and acids.