Download - Nuclear Chemistry. Hiroshima Nagasaki Nuclear Fission : splitting of the atom into different parts
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Nuclear Chemistry
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Hiroshima
Nagasaki
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Nuclear Fission: splitting of the atom into different parts
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Nuclear Fusion:nuclear particles combining releasing energy
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How the bomb works
Critical mass
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How a Nuclear Power Plant works
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Nuclear Decay ParticlesComes out of the nucleus
Alpha:
Beta:
Positron:
Gamma Ray:
Neutron:
Worksheet: balancing nuclear equations
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Half-Life Nuclear Decay
Students tear a piece of paper
• 1st half life = ½ ½
• 2nd half life = ¼ ¾
• 3rd half life = 1/8 7/8
• 4th half life = 1/16 15/16
Amount of sample left
Amount of sample gone
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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 radium-226?
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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?
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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 polonium-210?
6. If you start with 2.97 x 1022 atoms of Molybdenum-91, how many atoms will remain after 62.0 minutes? The half-life of Mo-91 is 15.49 minutes.
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