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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.
Measuring the Density of a Sugar SolutionKaren I. Peterson This experiment addresses the concept of equipment calibration for reducing systematic error. Students prepare and measure the densities of sucrose solutions with simple glassware that has been calibrated using the density of water. By careful work, students can determine the density to within 0.5%. allowing accuracy to be a major component of the final grade. Peterson, Karen I. J. Chem. Educ.2008, 85, 1089.
Calibration |
Carbohydrates |
Physical Properties |
Quantitative Analysis |
Solutions / Solvents
[#97] The Sweeter Side of DensityMichael Davis and Charles Henry Students determine the density of different sugar solutions and then devise a method for layering them in a graduated cylinder. Dyeing the solutions with food coloring results in a rainbow-colored, heterogeneous mixture. Davis, Michael; Henry, Charles. J. Chem. Educ.2008, 85, 1088A.
Physical Properties |
Solutions / Solvents |
Aqueous Solution Chemistry |
Student-Centered Learning
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 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.
