Lecture 20_Ch20

Lecture 20_Ch20 - Plan Chapter 20 Nuclear Fission and...

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1 Chapter 20 Nuclear Fission and Fusion and Nuclear Energy Plan 1. Radioactivity (Summary) 2. Nuclear Fission Reaction 3. Nuclear Fission Chain Reaction 4 Nuclear Reactors and Power Plants 4. Nuclear Reactors and Power Plants 5. Nuclear Fusion 6. Energy release in fission and fusion reactions 7. Summary Home Work ! Chapter 20 ! Key Terms ! Review Questions 1, 2, 3, 6, 10 ! Exercises: 7, 11 ! ! Mendeleev’s Periodic Table
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2 1. Radioactivity (Ch 19) Not all elements in periodic table are stable! Radioactivity is the process by which certain elements emit particular forms of radiation. There are three major forms of radioactivity: alpha, beta, and gamma Radioactivity. Summary 1. Radioactivity is the process by which certain elements emit particular forms of radiation. 2. There are three major forms of radioactivity: alpha, beta, and gamma 3. Radioactivity is a natural phenomena 4. Transmutation: When atomic nucleus emits an alpha or beta particle, the atomic number of the nucleus is changed! 5. New type of forces - Strong Interaction: Attractive Short range forces Much stronger electric forces: 1/137 6. Radioactivity results from an imbalance of strong and electric forces in the nucleus ! 2. Nuclear Fission Nuclear fission is splitting of a nucleus into fragments. Liquid Drop model and Nuclear Fission http://www.tutorvista.com/content/chemistry/chemistry-iv/nuclear- chemistry/nuclear-reactions.php
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3 3. Nuclear Fission Chain Reaction Chain reaction occurs if new neutrons are able to find another uranium-235 nuclei and cause their fissioning. Critical Mass is the minimum
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This note was uploaded on 05/27/2011 for the course PSC 1121 taught by Professor Khankasayev during the Fall '08 term at Florida A&M.

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Lecture 20_Ch20 - Plan Chapter 20 Nuclear Fission and...

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