6.8 More About the Photon--The deBroglie and Heisenberg Discussions
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Colors of Elements in a Flame Aqueous solutions of various compounds are sprayed into a Meeker burner flame from an atomizer.
Atomic Properties / Structure |
Descriptive Chemistry |
Spectroscopy
Paramagnetism: Compounds Vials of a number of compounds (NaCl, MnSO4, FeSO4, CoCl2, NiSO4, ZnSO4, K4Fe(CN)6, [Co(NH3)6]Cl3, [Ni(NH3)6]Cl2, and H2O) are hung from a thread. When a magnet is brought near, some of the vials are attracted.
Magnetic Properties |
Atomic Properties / Structure
Paramagnetism: Oxidation States of Manganese Manganese(III) oxide, with 4 unpaired electrons per Mn atom, is more strongly attracted to a magnet than is manganese(IV) oxide, with only 3 unpaired electrons per Mn atom. Potassium permanganate, a compound of Mn(VII), has no unpaired electrons and is not attracted to a magnet.
Sampling the Soils Around a Residence Containing Lead-Based Paints: An X-ray Fluorescence ExperimentSteven J. Bachofer A soil sampling experiment using field portable instruments was conducted at a pre-1950 construction known to have lead-based paint. Students collected data following regulatory protocols at multiple locations within and outside of the house's dripline, reported their results, and provided the owner advice on methods to minimize contact with contaminated soil. Bachofer, Steven J. J. Chem. Educ.2008, 85, 980.
John Krenos Metiu has created a significant set of volumes on undergraduate physical chemistry. The integration of Mathematica and Mathcad workbooks into the four texts provides instructors with an attractive new option in teaching. Krenos, John. J. Chem. Educ.2008, 85, 206.
Quantum Chemistry |
Statistical Mechanics |
Thermodynamics |
Kinetics
Paint Analysis Using Visible Reflectance SpectroscopyErin M. Hoffman and Douglas J. Beussman This paint analysis lab is meant to allow students to determine if paint samples that may appear similar to the human eye have measurable differences. The forensic aspect of the experiment lies in the application of reflectance spectroscopy to determine if a paint sample found at a crime scene matches that found in a suspect's possession. Hoffman, Erin M.; Beussman, Douglas J. J. Chem. Educ.2007, 84, 1806.
The Amount of Substance: MolesEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
