Nuclear Chemistry
Hiroshima
Nagasaki
Nuclear Fission:
splitting of the atom into different parts
Nuclear Fusion:nuclear particles combining releasing energy
How the bomb works
Critical mass
How a Nuclear Power Plant works
Nuclear Decay Particles
Comes out of the nucleus
Alpha:
Beta:
Positron:
Gamma Ray:
Neutron:
Worksheet: balancing nuclear equations
Half-Life Nuclear Decay
Students tear a piece of paper
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•
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1st half life = ½
2nd half life = ¼
3rd half life = 1/8
4th half life = 1/16
½
¾
7/8
15/16
Amount of sample gone
Amount of sample left
Ws.
1.
The half-life of polonium-210 is 138.4 days. How many
milligrams of polonium-210 remain after 415.2 days if you start
with 2.0 mg of the isotope?
2. Assuming a half-life of 1599 years, how many years will be
needed for the decay of 15/16 of a given amount or radium226?
3.
The half-life of radon-222 is 3.824 days. After what
time will one-fourth of a given amount of radon
remain?
4.
A sample contains 4.0mg of uranium-238. After
4.46x109years, the sample will contain 2.0mg of
uranium-238. What is the half-life of uranium-238?
5.
A sample contains 16mg of polonium-218. After 12
minutes the sample will contain 1.0mg of
polonium-218. What is the half-life of polonium210?
6.
If you start with 2.97 x 1022 atoms of Molybdenum91, how many atoms will remain after 62.0
minutes? The half-life of Mo-91 is 15.49 minutes.
7.
8.
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10.