The Vitamin C Clock Reaction has now been adapted to serve as a student laboratory experiment in the education process of high-school and college-level general chemistry. Despite of imparting valuable knowledge, it also may be hazardous, as the tincture of iodine contains inflammable substances that may cause burning on prolonged exposure.

An experiment is designed where students will be using both gold and silver nanoparticles to study the enhancement factors of organic molecules adsorbed to the surface of the nanoparticles during or after synthesis by using surface-enhanced Raman spectroscopy (SERS). The experiment has helped students learn about the theory and experimental…

Experiments suited for the undergraduate instructional laboratory in which the heats of formation of several aliphatic and aromatic compounds are calculated, are described. The experiments could be used to introduce students to commercially available computational chemistry and its thermodynamics, while assess and compare the energy content of…

We suggest the creation of a Global Web Laboratory (we call it "GloLab") for scientific purposes and teaching experiments online. In this article, we discuss the main principles and problems of building such a global Internet-laboratory. An example of a current working laboratory for teaching magnetism experiments online is also discussed.

Described are several organometallic experiments for the homogeneous hydrogenation of alkenes that could be used in schools. Procedures and expected results are detailed. (RH)

The attempts of scientists to detect the existence of the medium of ether are traced. (DT)

A SCIENCE UNIT ON ORGANIZATION IS PRESENTED. THE OBSERVATION AND CATEGORIZATION OF LIVING THINGS ARE EMPHASIZED. STUDENTS ARE REQUIRED TO GATHER SPECIMENS OF PLANT AND ANIMAL LIFE AND TO LOOK FOR DIFFERENCES AND SIMILARITIES AMONG THEM. THIS COLLECTING AND GROSS SORTING OF SPECIMENS ARE ENCOURAGED THROUGH LABORATORY EXERCISES. DATA SHEETS ARE USED…

Describes an experiment in which atomic diffusion in a solid is accompanied by a color change. (MLH)

Failure is frequently the end point of laboratory exercises in physiological psychology that involve stereotaxic surgery by inexperienced students. Lab instructors should caution students to pursue the potential location of misplaced brain lesions using a variety of simple behavioral tests and the Thompson stereotaxic atlas. (Author/RM)

A report on the National Bureau of Standards is presented. It provides national measurement standards for some 40 physical quantities related through the laws of physics to the basic six - length, time, mass, temperature, electric current, and luminous intensity. (DF)