Summarizes chemical principles underlying the operation of automobiles and the cause of air pollution, including concentrations of carbon monoxide, unburned hydrocarbons, and oxides of nitrogen. Comments and opinions are made concerning present and future pollution control devices. (CC)

Summarizes current status of our knowledge about acid-base interactions, including Lewis considerations, experimental design, data about donor-acceptor systems, common misconceptions, and hard-soft acid-base model. Indicates that there is the possibility of developing unifying concepts for chemical reactions of inorganic compounds. (CC)

Summarizes the characteristics of critical path methods for preparing curricula, including behavioral definitions of curriculum objectives, module lengths, effects of published network of prerequisites on individually paced learning, and forms of network-based planning. Indicates that the network planning has the advantage of clarifying the place…

Discusses offering of a modular course designed to acquaint the student with methods of observing and quantitatively measuring the properties and reactions of chemicals. Included is a brief sketch of course content and requirements. (CC)

Discusses the use of the data collecting and storage capabilities of the computer to monitor the progress of students and investigate the effectiveness of teaching strategies. (CC)

Discusses an experiment on determination of vegetative radioactivity resulting from nuclear tests. Included is a detailed description of experimental procedures. (CC)