icp half-life centsium lab 10/1/12. warmup 1)which is more stable? a sample with a half- life of one...
TRANSCRIPT
ICP
Half-Life Centsium Lab10/1/12
Warmup
1) Which is more stable? A sample with a half-life of one day, or a sample with a half-life of one week?
2) Write an equation for the beta decay of thorium-234.
3) How many half-lives must a radioactive sample go through before it is at 25% of its original amount?
Agenda
• Centsium Lab• Time to work on half-life problems worksheet
• Homework: “Half-Life Problems” Worksheet from Friday
Centsium Lab PointersTotal Time Undec. 1 Undec. 2 Undec. 3 Decay 1 Decay 2 Decay 3
0 50 50 50 0 0 0
10
20
• Keep adding your decayed to the number of decayed before.
• Do not lose pennies. A missing penny is one point off your group’s lab grade.
• Lay out your pennies in two 5x5 squares before putting them up at the end, so that I can check that you have them all.