This procedure, using polystyrene spheres of specified diameter, renders the Millikan oil drop experiment more accurate than the conventional procedure of the polystyrene spheres, eliminates size estimation error, and removes the guesswork involved in assigning proper index integers to the observed charges. (MLH)

Reported here is a convenient alternative for determining the enantiomeric purity of student resolved alpha-phenylethyl amine using a chiral lanthanide shift reagent. (BB)

This experiment graphically demonstrates a change in the sign of the P-C-H coupling constant between trivalent phosphorus and tetravalent phosphorus. (BB)

This reaction can form the basis of a laboratory experiment for students who have mastered basic spectroscopy. The structure of the product can be assigned from four reasonable possibilities on the basis of the nmr spectrum. (BB)

Describes a blood coagulation test developed by two high school biology students. Although the test lacks some precision, results indicate that the technique is comparable to standard methods used in laboratories. (MA)

Describes an experiment for general chemistry students for analyzing bathroom cleansers. (SL)

Describes a laboratory exercise illustrating the use of the Cannizzaro reaction in synthesis, the production of commercial resin, and the importance of natural products in industrial chemistry. (SL)

Describes an experiment utilizing the Solvay synthesis of sodium hydrogen carbonate to teach students to organize and plan a synthesis procedure. (SL)

Reviews experiments performed in a mobile spectroscopy laboratory. (SL)

Reports on apparatus for generating Lissajous figures, projecting Poisson's spots, photographing diffraction patterns, electric heating, and projecting moving longitudinal waves on an oscilloscope. (SL)

Describes the use of an interactive computer terminal for introductory laboratory experiments. (SL)

Reports an experimental procedure for a course in physical organic chemistry to illustrate correlation between structure and reactivity. (SL)

Folsomia candida is presented as an ideal organism for population studies that can be carried out cheaply and easily in school laboratory conditions. Means of identifying, obtaining, and culturing these organisms are described together with some indication of the kinds of investigations which can be performed. (Author/MA)

Describes an experiment for the determination of water/lipid distribution ratios of drugs. (SL)

Describes a laboratory experiment suitable for undergraduate students which illustrates the oxidative coupling of phenols. (SL)