New apparatus and equipment are briefly described. Sources of materials are given. (MLH)

Presents several topics in color photography which can serve as an introduction of scientific concepts into the classroom, such as: photochemistry (energy transport), organic chemistry (dye formation), physics (nature of light), psychology (color perception), and engineering (isolation of different chemical processes within layers of the film).…

Examines the early photochemical and photographic research of French, German and English natural philosophers. Describes how these investigators developed photography and the laws which govern photochemical reactions. (MLH)

Presents the spectra of the flames of three gaseous mixtures, together with analyses of the rotational, vibrational, and electronic contributions to the spectra. (MLH)

Discusses the teaching of science history in chemistry classes. Concludes that a clear, unprejudiced presentation of historical fact requires a great deal of research and knowledge, and may be better left to history specialists. (MLH)

Three brief articles present (1) the use of adrenaline related to the preparation and properties of amines; (2) a non-lecture approach to organic chemistry; and (3) the use of comic books in teaching chemistry. (RH)

Several questions (and answers) regarding the effect of environmental variables on organisms are presented. (RH)

Discusses the chlorination of water supplies. Includes a description of the chemical species present due to chlorination, and the dangers of and alternatives to the chlorination of water systems. (MLH)

Discusses the fact that although most historians of science attribute the formulation of the law of conservation of matter in chemical reactions to Antoine Lavoisier at the end of the eighteenth century, several earlier researchers had already assumed this law in their work. These researchers include Joseph Black, Henry Cavendish, M. V. Lomonosov,…

Describes a simple computer-based information retrieval system which manipulates non-numeric information using a program that simulates a three-level information storage system. The system is used to create, modify, and selectively search a data base both interactively and noninteractively. (MLH)

Discusses the advantages of using small scale experimentation in the undergraduate organic chemistry laboratory. Describes small scale filtration techniques as an example of a semi-micro method applied to small quantities of material. (MLH)

Describes an undergraduate organic chemistry laboratory experiment which utilizes the solvolysis of organic halides to demonstrate first and second order reaction kinetics. The experiment also investigates the effect of a change of solvent polarity on reaction rate, common-ion and noncommon-ion salt effects, and the activation parameters of a…