Chapter 19 Radioactivity and Nuclear Energy. EXIT The Nucleus and Chemistry The chemistry of an atom is determined by the number and arrangement of its.

Chapter 19 Radioactivity and Nuclear Energy

EXIT The Nucleus and Chemistry The chemistry of an atom is determined by the number and arrangement of its electrons, the properties of the nucleus do not strongly affect the chemical behavior of an atom. Copyright © by McDougal Littell. All rights reserved.2

EXIT Instant Question #1 Which of the illustrations below depicts an alpha particle? 8

EXIT Instant Question #2 If the isotope phosphourous-32 loses a alpha particle it becomes ____________ A. phosphorous – 30 B phosphorous – 28 C. aluminum – 30 D. aluminum– 28 9

EXIT Instant Question #3 Which direction and how far is the new element when iron-56 loses an alpha particle? 56 Fe  α + __ 10

EXIT Can they penetrate living matter? Beta particles are able to penetrate living matter to a certain extent. They interact with the skin but remember the outer layer of skin is dead anyway. The real danger is breathing it in. Copyright © by McDougal Littell. All rights reserved.15

EXIT What is Gamma Radiation? Gamma radiation is high energy waves that are produced with fission reactions or other high energy nuclear decays. They are similar to X-rays. Copyright © by McDougal Littell. All rights reserved.20

EXIT Penetrating Power of Radiation

EXIT Copyright © by McDougal Littell. All rights reserved.30 Quiz # 6 If an isotope of iron gave off a beta particle, it would: A. Turn into Manganese B. Turn into Chromium C. Turn into Cobalt D. Remain iron but have a different atomic number

EXIT Copyright © by McDougal Littell. All rights reserved.31 Quiz # 7 If an isotope of iron gave off a alpha particle, it would: A. Turn into Manganese B. Turn into Chromium C. Turn into Cobalt D. Remain iron but have a different atomic number

EXIT Copyright © by McDougal Littell. All rights reserved.32 Quiz # 8 Put these types of radiation in order of least penetrating to most. a. Alpha Beta Gamma b. Beta Gamma Alpha c. Beta Alpha Gamma d. Gamma Beta Alpha

EXIT Copyright © by McDougal Littell. All rights reserved.34 Quiz # 10 Which equation represents a nuclear reaction? A. CO 2 + H 2 O  H 2 CO 3 B. Fe  Fe 2+ + 2e C. 39 K  39 Ca + e D. 2H + + O 2-  H 2 O

EXIT NUCLEAR POWER 35

EXIT Getting it out of the ground It isn’t extremely difficult to obtain but it isn’t easy either. You have to have big trucks big machines and big money. It occurs naturally in low concentrations 3-4 PPM. About a teaspoon for ore the size of my desk. Copyright © by McDougal Littell. All rights reserved.37

EXIT What are the isotopes of uranium? The 235. When hit with a neutron, 235 splits into two atoms and gives off 3 more neutrons. 41

EXIT Harry K. Daghlian, Jr. Copyright © by McDougal Littell. All rights reserved.53 Dose 5.1 Sieverts He died 25 days later. This Is his hand after nine days. As he was moving the brick over the assembly, counters alerted him to the fact that the addition of this brick would render the system supercritical. As he withdrew his hand, he accidentally dropped the brick onto the assembly.supercritical

EXIT Copyright © by McDougal Littell. All rights reserved.58 white-tailed deer tongues harvested over 50 miles from the reactor subsequent to the accident were found to have significantly higher levels of Cs-137 than was found in deer in the counties immediately surrounding the power plant. However, the elevated levels were still below those seen in deer in other parts of the country during the height of atmospheric weapons testing

Chapter 19 Radioactivity and Nuclear Energy. EXIT The Nucleus and Chemistry The chemistry of an atom is determined by the number and arrangement of its.

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Chapter 19 Radioactivity and Nuclear Energy. EXIT The Nucleus and Chemistry The chemistry of an atom is determined by the number and arrangement of its.

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Presentation on theme: "Chapter 19 Radioactivity and Nuclear Energy. EXIT The Nucleus and Chemistry The chemistry of an atom is determined by the number and arrangement of its."— Presentation transcript:

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