This second volume of UNESCO's series on New Trends in Chemistry Teaching presents papers originally published during 1966 and 1967 in leading chemistry-teaching periodicals of the world. The papers have been grouped in sections - structure, energetics and kinetics, acids and bases, organic chemistry, electrochemistry, chemistry and industry, selected topics and source books. Separate introductions have been written for each group of papers to make clear the significance of the papers within the group. The papers are intended mainly for teacher educators, secondary school science teachers and pre-service chemistry teachers, to help them in the task of keeping abreast of the developments in curricula, syllabuses, methods and materials for chemistry teaching. The last section contains (1) a summary of some of the chemical education activities in developing countries, (2) sources of chemistry films and film-loops, (3) science teachers' abstracts, (4) journals and periodicals of relevance to chemistry teaching, and (5) the names and addresses of science education projects around the world. (LC)