Chemistry Chapter 19
Terms
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- Heneri Becquerel
- first found radioactivity in U ore
- Lord Rutherford
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named the 3 types of U: alpha, beta, gamma
Nobel Prize
Gold foil nucleus, electrons orbit nuetron
Artificial Transmutation N-14 to O-14 - Pierre Curie
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found a gram of polonium in one ton of pitchblende and also radium in pitchblende - Marie Curie
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Nobel in Chemistry
Studied chem. for radium(got radioactivity) - Irene Curie
- Produced first synthetic radioactive isotope(p-30), by bombarding Al-27 with alpha particles)
- Frederic Joliot
- Produced first synthetic radioactive isotope(p-30), by bombarding Al-27 with alpha particles)
- Willard Libby
- Carbon Dating
- What is the difference between natural and iniduced radioactivity?
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Natural: Unstable nuclei trying to become stable
Induced: Bombarding stable nucleus to make unstable ones - Artificial decay releases/does not release
- is never alpha or beta, but can release gamma
- Induced Radioactivity
- positron decay, electron capture, nuclear bombardment
- Enrico Fermi
- built first nuclear reactor
- Alpha Emission
- Give off hydrogen 4, 2
- Beta Emission
- Nuetron becomes proton, and electron shot off
- Nuclear Bombardment
- Atoms shot at nuclides to cause different products
- Positron Decay
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Beta-Positive Decay:
Proton becomes a nuetron, and positive electron is shot out - Electron Capture
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Electron captured:
captures inner electron, and proton becomes a nuetron - Nuclear Symbol
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Nuclear Symbol - Cr-51
- red blood cells
- I-131
- thyroid
- Ga-67
- lymph glands
- P-32
- liver, eyes, tumors
- Sr-87
- bones
- Co-60
- cancerous tomor therapy