2.6. Melting Points, Boiling Points, and Solubilities
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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.
Designing and Conducting a Purification Scheme as an Organic Chemistry Laboratory PracticalKate J. Graham, Brian J. Johnson, T. Nicholas Jones, Edward J. McIntee, and Chris P. Schaller Describes an open-ended laboratory practical that challenges students to evaluate when different purification techniques are appropriate. Graham, Kate J.; Johnson, Brian J.; Jones, T. Nicholas; McIntee, Edward J.; Schaller, Chris P. J. Chem. Educ.2008, 85, 1644.
IR Spectroscopy |
Microscale Lab |
Molecular Properties / Structure |
NMR Spectroscopy |
Physical Properties |
Separation Science
A Non-Mercury Thermometer Alternative for Use in Older Melting Point ApparatusesLois K. Ongley, Clayton S. Kern, and Barry W. Woods This work demonstrates that lab-calibrated thermocouples are a statistically accurate and economically reasonable substitute for mercury thermometers to measure the melting point temperature for organic compounds in older Mel-Temp devices. Ongley, Lois K.; Kern, Clayton S.; Woods, Barry W. J. Chem. Educ.2008, 85, 1263.
Calibration |
Laboratory Equipment / Apparatus |
Molecular Properties / Structure |
Physical Properties |
Laboratory Management
Using Molecular Dynamics Simulation To Reinforce Student Understanding of Intermolecular ForcesPhillip R. Burkholder, Gordon H. Purser, and Renee S. Cole This article presents a series of experiments incorporating molecular dynamics simulations which predict the motion of chemical species based on the application of empirical rules and a physical analysis of the forces that act between the species. These motions can then be shown in vivid graphical form. Burkholder, Phillip R.; Purser, Gordon H.; Cole, Renee S. J. Chem. Educ.2008, 85, 1071.
Boiling PointEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Physical Properties |
Phases / Phase Transitions / Diagrams
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.
