Twelve new chemistry expermiments are described. Broad areas covered include atomic structure, solubility, gaseous diffusion, endothermic reactions, alcohols, equilibrium, atomic volumes, and some improvised apparatus. (PS)

Reports an investigation to determine whether or not interaction analysis could be used as a tool to analyze laboratory instruction and to identify patterns of instruction which differentiate effective and ineffective teaching. Indicates student performance can be enhanced by a student-centered climate. (Author/TS)

Discussed are individual report presentations in seminars and programed instruction as two approaches to teaching in colleges. Enthusiasts of these two methods overlook inherent demerits. Influences of a teacher's personality and interest in subject on the students should be carefully considered. (PS)

The American Chemical Society has proposed a federal program which would enable 1500 unemployed chemists and chemical engineers possessing master's or higher degrees to serve from one to two years as interns in industrial research and development installations. (Author/TS)

The role of phosphates in environmental issues and in detergents is discussed. Experimental procedures are described for colorimetric determination of orthophosphates. (TS)

Describes and compares procedures and results of determination of colorimetric, potentiometric, and amperometric endpoints of an oxidative titration of arsenite by iodine. (TS)

Reviews the advantages of computer simulated environments for experiments, referring in particular to acid-base titrations. Includes pre-lab instructions and a sample computer printout of a student's use of an acid-base simulation. Ten references. (PR)

Presents some aspects of concept learning theory (what concepts are and how to analyze them) and proposes ways to improve the teaching of concepts in introductory chemistry courses. Emphasizes the lecture format, although ideas presented are applicable to other teaching methods. (Author/JN)

Clarifies misunderstanding of Millikan's experiment measuring charge on electrons. Most books describing the experiment indicate ionization of air in the apparatus caused liberation of electrons, and that these electrons were picked up by oil droplets. However, in Millikan's discussion, it is stated clearly that ions were attached to oil droplets.…

A Chemical and Engineering News survey shows that among chief executives in 20 U.S. chemical firms, 73 percent have some technical training; 53 percent of these have bachelors in chemistry or chemical engineering, substantially increased from a decade ago. Comments on the trend toward more technically trained management are provided. (Author/JN)