Nuclear Radiation Outline

Nuclear Radiation Outline - CHEMISTRY 120 CHAPTER 9 REVIEW...

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CHEMISTRY 120 – CHAPTER 9 – REVIEW Nuclear Radiation Nuclear reactions: result when neutrons and/or protons undergo change to become more stable. Nuclear radiation: high energy particles capable of ionizing stable molecules. o One alpha particle ionizes 40,000 molecules o One beta particle ionizes 2,000 molecules. Radioactive isotope: an atom with an unstable nucleus. Emits to become more stable. Alpha particle radiation: a helium nucleus with no electrons. o Symbol: 4 2 He 2 protons and 2 neutrons = 4 amu 2+ charge o Distance traveled: air 2-4 cm, tissue .05 mm. o Protection: paper or clothing. o Particle speed: 10% the speed of light. Beta particle radiation: an electron emitted from a nucleus (neutron à proton + beta particle) o Symbol: β or 0 -1 e no mass 1- charge o Distance traveled: air 1-2 meters, tissue 4-5 mm o Protection: lab coat gloves. o Particle speed: 90% the speed of light. Gamma ray radiation:
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This note was uploaded on 04/10/2008 for the course CHEM 231 taught by Professor Hanover during the Spring '08 term at Lansing.

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Nuclear Radiation Outline - CHEMISTRY 120 CHAPTER 9 REVIEW...

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