Describes an undergraduate biochemical experiment involving the isolation and characterization of acid phosphatase from readily available materials. (Author/SL)

Describes a simple self-quenching super-regenerative nuclear quadrupole resonance (NQR) spectrometer. (SL)

Presents the first of a series of papers discussing the major features and underlying philosophies of general college chemistry. This first paper reviews secondary level course content as well as college level general chemistry curricula. (SL)

Discusses use of concepts from system analysis to present principles of environmental chemistry at introductory or advanced levels. (SL)

Discusses the biocidal/toxicological applications of organo derivatives of true metals. (SL)

Discusses a class of compounds called quaternary ammonium salts, and their application in undergraduate research in chemistry. (SL)

Discusses the chirality of the disulfide bond and its significance in the structure and activity of biomolecules. (SL)

Provides a clarified definition of the relative configuration of two chiral centers, erythro and threo, as utilized in stereochemistry or organic chemistry. (SL)

Reviews problems encountered in unimolecular reaction theory. (SL)

Discusses the determination of eutectic composition, the mathematics of chemical equilibrium, the wave functions of one-electron orbitals, and the use of pharmacological agents in introductory chemistry courses. (SL)

Provides four questions and answers relating to topics in environmental chemistry as well as six reader comments relating to questions presented in previous issues. (SL)

Discusses increasing enrollment and decreasing attrition in chemistry classes by matching teaching method, teachers, and materials with the student. (SL)

Describes a demonstration concerning the air pollution aspects of gasoline vapor which provides an estimation of the vapor pressure of test fuel, the molecular weight of the vapor, and illustrates a method of controlling the pollution. (SL)

Describes the use of a transparent rectangular box with transparent spheres to demonstrate the three dimension basic concepts of close packing. (SL)

Describes a 12 hour minicourse in Huckel molecular orbital (HMO) theory presented as part of a senior level chemical bonding course. (SL)