Describes a method to aid undergraduates in their understanding of quantum theory. Presents a numerical self-consistent field calculation on a one-dimensional model for the helium atom. (CS)

Presents comparative results in achievement on the General Chemistry 1977 ACS Examination (New York) for first year college chemistry students, students completing one year of secondary school chemistry (N=778) and another secondary group (N=176) completing a year of advanced placement chemistry in addition to the one year of chemistry. (CS)

Presents questions and answers about the fluoridation of water regarding the compounds added to drinking water in the fluoridation process, how raw water is tested for fluoride content, and how fluoride reacts with tooth enamel. (CS)

Presents abstracts and summaries of articles that have appeared in recent issues of science teaching publications, appropriate for use in secondary school chemistry classrooms. (CS)

Presented are techniques, methods, and ideologies from a chemistry teacher in a small county high school in Florida. Ways in which chemistry has been individualized are discussed. (CS)

Proposes a format for submitting 50-minute experiments suitable for high school beginning chemistry classes to this journal for a new feature section. (CS)

Explains three games played with Chem-Deck, a card game which gives students practice in forming chemical compounds by familiarizing them with the charges of various ions. Effectiveness of this technique in terms of cognitive and affective components is supported by statistical data. (CS)

Presents an illustration to demonstrate the smallness of molecules; also a derivation of a temperature scale (Fahrenheit/Celsius) interconversion equation by plotting temperatures of one scale against corresponding temperature of another. (CS)

Presents a demonstration of the effect of alkyl free radical stability on the rate of free radical halogenation of hydrocarbons. The arenes toluene, ethylbenzene and comene are photobrominated comparatively, using an overhead projector both to provide a light source for the chemical reaction and to project the results on a screen. (CS)

Describes an experiment with Orange II to illustrate a central idea of thermodynamics--the amount of work that must be done to bring about a particular transformation depends not only on the energy content of the initial and final states but also on the degrees of dispersion of those states. (CS)

Describes the procedures for construction of a nitrate coated-wire ion selective electrode and suggests experiments for evaluation of electrode response and illustration of typical analytical applications of ion selective electrodes. (CS)

Describes a clock reaction resulting from the reaction of paraquat with base. (CS)

Describes a general chemistry experiment involving gas law calculations, utilizing Alka Seltzer as a source of carbon dioxide. (CS)

Presents an undergraduate experiment demonstrating sampling error. Selected as the sampling system is a mixture of potassium hydrogen phthalate and sucrose; using a self-zeroing, automatically refillable buret to minimize titration time of multiple samples and employing a dilute back-titrant to obtain high end-point precision. (CS)

Presents an undergraduate quantitative analysis experiment, describing an atomic absorption quantitation scheme that is fast, sensitive and comparatively simple relative to other titration experiments. (CS)