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Review. Build atoms from P N e P, N same mass >> e mass P+ attracts e- Binds the atom Equal number of P, e neutral Solar system model (incomplete) Number of atom is measured using mass (non intuitive) AMU. Assignment. Periodic table Groups, periods

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Review

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  1. Review • Build atoms from P N e • P, N same mass >> e mass • P+ attracts e- Binds the atom • Equal number of P, e neutral • Solar system model (incomplete) • Number of atom is measured using mass (non intuitive) AMU GSCI 163 Spring 2010

  2. Assignment • Periodic table • Groups, periods • Characteristics of atoms in table • Ionization, size, properties electronegativity Rules YOU MAY REFER TO YOUR OWN HANDWRITTEN NOTES ONLY. You may prepare, discuss, read until you start the quiz. No books. No copied material. No internet pages. No help from any person once the quiz starts. Once you take the quiz you may not discuss the quiz contents. GSCI 163 Spring 2010

  3. Expand and Correct Solar System Model • Periodic table • Orbitals • New mechanism to hold electrons • Essential to chemsitry GSCI 163 Spring 2010

  4. Simple Problem • Everyone make a list of typical characteristics that distinguish male from females. • Males are stronger • Males are smarter • Males multitask better • Males have better social relationships GSCI 163 Spring 2010

  5. Conclusion • General rules are useful. • There are many exceptions. • Looking for the obvious chemistry rules • Learn to apply these rules to standard problems • Chemistry is a very complex field with many subtleties and exceptions GSCI 163 Spring 2010

  6. Finish Atom activity • How big is an atom OIL on WATER GSCI 163 Spring 2010

  7. Periodic Table • Lets build the first atoms in the periodic table and construct our own table. • Place the atoms in groups and cycles based on our guesses as to the properties and their masses. • To start we need to try and guess at properties using the solar system model. GSCI 163 Spring 2010

  8. View Atomic Spectra • Spectroscopy activity • http://csma31.csm.jmu.edu/physics/Courses/164/fall2002/activity6_lightII/spectrum.htm GSCI 163 Spring 2010

  9. Add QM • Every atom has a set of energy levels 1,2,3,4... • The levels are made up of orbitals labeled by a convention that we need to learn. • S,P,D,F GSCI 163 Spring 2010

  10. Orbitals 1S 2S 4F 2P GSCI 163 Spring 2010

  11. GSCI 163 Spring 2010

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