7CHM115F09 HIK and students (1)

7CHM115F09 HIK and students (1) - CHM 115 Dr. Hilkka...

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CHM 115 Dr. Hilkka Kenttämaa Lecture 7 Reading was: 7.1 – 8.5 The Structure of Atoms and Molecules Lecture 8: 8.6 – 8.7
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Exam 1: February 5th, 6:30 PM Elliot Hall of Music Bring pencils, PUID, non-programmable calculator, seat location (!) Be in your seat by 6:25 PM You cannot leave during the first 15 minutes of exam. Take your exam paper with you upon leaving.
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Most Important Things to Study Units of most important physical parameters Using significant figures Structure of atoms; nucleons; isotopes Formation of ions from different elements Atomic/molecular mass; amu; mol; molar mass; conversions between g and amu Use of ideal gas law; standard molar volume
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Natural types of radioactive decay; the particles that can be emitted Balancing nuclear equations; 25 12 Mg + 4 2 He A Z X + 1 1 H 2200 E = mc 2 ; determination of mass defect; determination of N.B.E. Predicting how different nuclei decay Kinetics of radioactive decay; unimolecular rate constant; ln (N/N o ) = - k t ; half-life; k = ln 2 / t 1/2 Carbon dating
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Artificial nuclear reactions; balancing equations; predicting the types of particles involved The amount of energy produced in nuclear reactions Predicting fusion/fission based on N.B.E./nucleon Units for degree of radioactivity Damage of radioactivity to biological matter Units of absorption of a dose ( Gy, rads ) Quality factors Units for biological damage ( rem ) Main mechanism for killing cells
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Nucleus (positive charge) Electrons, e (negative charge) The Structures of Atoms and Molecules
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Electronic Structure of Atoms Think of atoms as the building blocks of molecules : The electrons associated with each atom form a chemical bond between nuclei Chapter 7: Electrons and Quantum Mechanics
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7CHM115F09 HIK and students (1) - CHM 115 Dr. Hilkka...

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