Experiment 4. Whittling Down the Possibilities: Identifying an Unknown Using Molecular Dipole Moment, Solubility, Density, and Boiling Point Data, 224
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Scattering and Absorption of Light The effects of passing light through a colloidal suspension of milk in water and through a solution of copper sulfate are shown.
Teaching Structure–Property Relationships: Investigating Molecular Structure and Boiling PointPeter M. Murphy The boiling points for 392 organic compounds are tabulated by carbon chain length and functional group to facilitate a wide range of inquiry-based activities that correlate the effects of chemical structure on physical properties. Murphy, Peter M. J. Chem. Educ.2007, 84, 97.
Molecular Properties / Structure |
Physical Properties
A Developmental History of Polymer Mass SpectrometryMatthew J. Vergne, Robert P. Lattimer, and David M. Hercules This review provides a historical perspective of the development of polymer mass spectrometry, divided into three eras: the small molecule era (1950s and 1960s); the macromass era (1970s and 1980s); and the modern era (the late 1980s to the present). Vergne, Matthew J.; Lattimer, Robert P.; Hercules, David M. J. Chem. Educ.2007, 84, 81.
Mass Spectrometry |
Materials Science |
Physical Properties |
Molecular Properties / Structure |
Instrumental Methods
An Engaging Illustration of the Physical Differences among Menthol StereoisomersEdward M. Treadwell and T. Howard Black The differences and similarities in the physical behavior of enantiomers and diastereomers can easily be demonstrated using the commercial stereoisomers (-)-menthol, (+)-menthol, (+)-isomenthol, and (+)-neomenthol. Thin-layer chromatography and melting point determinations clearly show that diastereomers have different physical properties from enantiomers and each other, but that enantiomers have identical physical properties in achiral environments. By obtaining a mixed melting point and optical rotations the difference in enantiomers can be observed. Treadwell, Edward M.; Black, T. Howard. J. Chem. Educ.2005, 82, 1046.
Boiling and Freezing PointsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Physical Properties
Floating Squares (GCMP)David M. Whisnant Floating Squares: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will coat a piece of notecard with graphite (from pencil lead). We then will float the piece in two beakers containing water and a second solvent. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Physical Properties
Floating FootballsEd Vitz A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
