Discusses two different uses of information theory in chemistry to present entropy and chemical structure analysis. (GA)

A number of phase transfer catalysis reactions are illustrated. (CP)

Proposes use of the Hammett relationship in the framework of a frontier orbital method for explanation of chemical reactivity. (CP)

Introduces a simple one-dimensional model of a diatomic molecule that can explain all the essential features of a real two particle quantum mechanical system and gives quantitative results in fair agreement with those of a hydrogen molecule. (GA)

Described is the use of molecular model kits in high school biology class and gives a laboratory unit for studying molecular structures of fats, proteins, and carbohydrates. (BB)

Discusses the energy levels of 3d and 4s electrons. (SL)

Formulae are proposed for the distinct cases of monatomic and diatomic gas volumes. Eight figures illustrate the article. (Author/MA)

Proposes a simple solution to the problem of expressing graphically absolute configuration, racemic character, and relative configuration in molecules. As demonstrated by several examples, the proposed convention brings added clarity and simplicity to structural drawings and renders graphic displays of chiral molecules as explicit and information…

Illustrates the 29 steps involved in the development of a model of a coordination polyhedron that represents the hexagonal closest packed structure. Points out it is useful in teaching stereochemistry. (TW)

Lists and explains the major characteristics of water. Compares water's molecular structure and its temperature-related properties with four other lightweight molecules. Discusses why water is considered the universal solvent. (ML)

Discusses modifications in the fatty acid monolayer experiment to reduce the inaccurate moleculary data students usually obtain. Copies of the experimental procedure used and a Pascal computer program to work up the data are available from the authors. (JN)

Discusses the use of orbital shapes for instructional purposes, emphasizing that differences between polar, contour, and three-dimensional plots must be made clear to students or misconceptions will occur. Also presents three-dimensional contour surfaces for the seven 4f atomic orbitals of hydrogen and discusses their computer generation. (JN)

Describes a senior-level course that: (1) focuses on the structure and reactions of macromolecules; (2) treats industrial polymers in a unified way; and (3) uses analysis of conformation and conformational statistics as a unifying approach. Also discusses course topics, including polysaccharides, proteins, nucleic acids, and others. (JN)

Background information and procedures are provided for a demonstration of intramolecular versus intermolecular hydrogen bonding. The demonstration is based on structural changes in bilirubin molecules which lead to changes in physical properties. A list of further investigations to try is included. (JN)

A Macintosh microcomputer and MacPaint program can be used to quickly make charts of structural formulas that fill standard-sized paper with a minimum of instruction, and smaller drawings or structures or fragments may be inserted into text composed with a word processing program. Shows how this is done. (JN)