15.5 Half-Life

Half-Life Is a Measure of Radioactivity

This video lesson explores the meaning of the term half-life, which is the time it takes for one half of a radioactive sample to decay. Duration: 5:54

Mobile Link: http://bcove.me/zlsdcis9

KM: Radioactive Paperclips

Kai and Maile explore the hands-on chemistry activity from the textbook: "Radioactive Paperclips." Keep in mind that legonium and headonium are make-believe elements represented by the paperclips. Duration: 2:39.

Mobile Link: http://bcove.me/7w2laorf