Discussed are the discovery of saccharin and dulcin and some examples of what has been learned from the research related to the development of these sweeteners. (RH)

Presented is a general approach and equation for teaching the hydrolysis of salts. This general equation covers many more sets of conditions than those currently in textbooks. The simplifying assumptions leading to the known limiting equations are straightforward. (RH)

Presented are three methods for dealing with chemical problems involving reaction stoichiometry. (RH)

Described is the laboratory program for a second-year chemistry class at a Wisconsin high school. The laboratory stresses student-designed labs. Examples of topics considered are included. (RH)

Described are three chemistry demonstrations designed to be used with overhead projectors. One activity suggests an activity for determining unknown liquids. The second activity describes a plastic spot plate for overhead demonstrations. Also described is a demonstration to show pH of selected chemicals. (RH)

Described are experiments to give students experience in the synthesis of peptides from amino acids and to use visible spectroscopy to measure a rate of reaction. The activities were designed for undergraduate courses. (RH)

Presented are three demonstrations for chemical education. The activities include: (1) demonstration of vapor pressure; (2) a multicolored luminol-based chemiluminescence demonstration; and (3) a Charles's Law/Vapor pressure apparatus. (RH)

Described is a laboratory activity to determine five unknown organic compounds. The procedures are designed to help students determine unknowns from a series of tests. (RH)

Described is an experiment that uses nuclear magnetic resonance to study the anomalous paramagnetism of iron(III) chelates. (RH)

Described are infrared windows made from Tupperware and polyethylene coffee can lids that provide acceptable spectra for low-frequency infrared. (RH)

Described is a quick, easy, and cheap, but effective method of obtaining infrared spectra of solids and nonvolatile liquids by Fourier transform infrared spectroscopy. The technique uses tissue paper as a support matrix. (RH)

Described is an alternative method to infrared spectroscopy for the quantification of xylene mixtures. The method employs nuclear magnetic resonance spectroscopy. (RH)

Described is a modified Fehling test and a modified corrected Benedict test. (RH)

Described is a laboratory exercise that uses nuclear magnetic resonance to monitor enantiomeric excess in asymmetric reductions. The laboratory exercise has been used successfully with undergraduate organic chemistry students. (RH)

Discussed are a brief explanation of the function of the vortex tube and some applications for the chemistry laboratory. It is a useful and inexpensive solution to many small-scale laboratory heating and cooling applications. (RH)