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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.
Helping Students Assess the Relative Importance of Different Intermolecular InteractionsPaul G. Jasien A semi-quantitative model has been developed to estimate the relative effects of dispersion, dipoledipole interactions, and H-bonding on the normal boiling points for a series of simple, straight-chain organic compounds. Application of this model may be useful in addressing student misconceptions related to the additivity of intermolecular interactions. Jasien, Paul G. J. Chem. Educ.2008, 85, 1222.
Chemometrics |
Molecular Properties / Structure |
Noncovalent Interactions |
Physical Properties
Make a MatchErika K. Jacobsen Suggests using this month's JCE Classroom Activity in conjunction with the laboratory exercise that follows it. Jacobsen, Erica K. J. Chem. Educ.2008, 85, 1090.
Calibration |
Carbohydrates |
Physical Properties |
Solutions / Solvents |
Quantitative Analysis
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.
DensityAmerican Chemical Society ACS Science for Kids activities explore the concept of density and how it can explain when objects float or sink in a liquid.
Physical Properties
Density Lecture DemonstrationsEd Vitz A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Physical Properties
Density in GeologyEd Vitz A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
