Isotopes & Half-Life
Post date: Oct 22, 2009 10:26:4 PM
http://www.sciencecourseware.org/VirtualDating/files/1.0_ClocksInRocks.html (webquest)
http://www.wwnorton.com/college/chemistry/gilbert/tutorials/ch2.htm (interactive tutorial) Click on Radioactive Decay Modes