The topic of ionic radius is generally given scant treatment in modern textbooks. Therefore, this article reviews some historical work and illustrates some of the applications of ionic radii in the teaching of inorganic chemistry. (JN)

Describes a study of perceived difficulty of chemistry courses among secondary school and college students in Kenya. Concludes that organic chemistry may not be as difficult as many people believe. (CW)

Presents background information, laboratory procedures, classroom materials/activities, and chemistry experiments. Topics include sublimation, electronegativity, electrolysis, experimental aspects of strontianite, halide test, evaluation of present and future computer programs in chemistry, formula building, care of glass/saturated calomel…