Acids, bases, and sea shells
Based on what you have learned about acids and bases, how do you think acid rains affect various objects in the environment? Which objects do you think would be most vulnerable? Have you ever taken an antacid to relieve your stomach? What would the pH of the antacid be?
What is an acid?
A substance that causes the release of hydrogen ions.
What is a base?
A substance that causes the release of hydroxide ions.
Conduct an experiment where you determine the pH of various brand name antacids.
"How Are Sea Shells Made?" from eHow http://www.ehow.com/about_6625736_sea-shells-made_.html