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Nuclear Chemistry The energy of life.

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Presentation on theme: "Nuclear Chemistry The energy of life."— Presentation transcript:

1 Nuclear Chemistry The energy of life

2 Nuclear chemistry What does nuclear chemistry depend on?
It depends on the nucleus. Nucleons are the nuclear particles. Radionuclides are radioactive. Radioisotopes are isotopes with a radionuclide.

3 Nuclear chemistry How do radioactive nuclei decay? Alpha particles
Beta particle Gamma particle Positron emission Electron capture

4 Nuclear chemistry What does stability of an element depend on?
The protons are held together by strong nuclear force. The neutrons keep them stable. The more protons, the more neutrons are needed.

5 Nuclear chemistry What is a radioactive series?
What is the final state of decay of Uranium? How does it get there? A series is a group of steps a radioactive nuclei goes through to become stable.

6 Nuclear chemistry What are nuclear transmutations?
This is a nuclear reaction that is induced. What does induced mean? Accelerated particles bombard a nucleus to create radioactive decay. Critical mass.

7 Nuclear chemistry What determines radioactive decay?
Half-life is determined by relative stability of the nucleus. They can range from microseconds to thousands of years.

8 Nuclear chemistry How do we detect radiation?
Geiger counters detect transmission of α, β, γ

9 Nuclear chemistry What is the difference between fusion and fission?
Fusion fuses nuclei and fission breaks them apart. Fusion is with small atoms, fission is with large.

10 Nuclear chemistry How much energy is stored in the nucleus?
The strong nuclear force is very large. Nuclear explosions and nuclear energy come from the controlled release of this energy. The sun is a giant nuclear fusion reaction.


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