F09_230_L36_post - CHEM 230 F09 L36 Chapter 17: Nuclear...

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CHEM 230 F09 L36 Chapter 17: Nuclear Chemistry Session ID 230
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Topics Nuclear Decay Balancing Nuclear Reactions Nuclear Stability Radiation Homework 10: 1-7
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Nuclear Chemistry Nuclear chemistry is the study of changes to the atomic nucleus - individual atoms changes, rather than making or break bonds or transfer electrons Nucleus size: 1x10 -15 m Lots of positive charge packed together
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Concept Question Isotopes of an element differ in the number of A) electrons B) neutrons C) protons D) electrons, neutrons, and protons
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Concept Question Isotopes of an element differ in the number of A) electrons B) neutrons C) protons D) electrons, neutrons, and protons
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Concept Question How many neutrons and protons are there in the radioisotope 60 Co (cobalt-60) that is used in cancer therapy? The atomic number of cobalt is 27. A) 60 neutrons and 27 protons B) 27 neutrons and 60 protons C) 33 neutrons and 27 protons D) 27 neutrons and 33 protons
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Concept Question How many neutrons and protons are there in the radioisotope 60 Co (cobalt-60) that is used in cancer therapy? The atomic number of cobalt is 27. A) 60 neutrons and 27 protons B) 27 neutrons and 60 protons C) 33 neutrons and 27 protons D) 27 neutrons and 33 protons
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What is happeing? Becquerel: Uranium oxide darkens photographic plates Curie: “radioactivity” comes from uranium atoms Curies: Th, Ra, Po also radioactive
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Nuclear Radiation: Rutherford α particles (+): charge +2 He +2 , α , A Z X C C = 12 6 C, 13 6 C, 14 6 C O 2- = 16 8 O 2- A proton = 1 1 p 1+ = 1 1 p + A neutron = 1 0 n 0 = 1 0 n An electron = 0 -1 e 1- = 0 -1 e - 2 4 " , 2 4 He + 2 A : mass (# of protons + neutrons) Z : atomic number (usu. # of protons) c : overall charge of the atom/ion = # protons - # electrons
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This note was uploaded on 03/29/2010 for the course CHEMISTRY 230 taught by Professor Gottfried during the Fall '10 term at University of Michigan.

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F09_230_L36_post - CHEM 230 F09 L36 Chapter 17: Nuclear...

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