Identifies problems facing the science educator as a result of the activities of professional educationalists and the knowledge explosion. Presents answers to these problems in an enumeration of the basic ingredients of scientific education, a consideration of the overall curriculum, and a discourse on the art of teaching. (GS)

Voices the opinion that clearer and more useful explanations of common chemistry are needed to facilitate understanding. Presents examples from the realms of atomic structure, periodic table, history of chemistry, valence, electronegativity, electrode potentials, covalent bonds, polar covalence, bond energy, and causes of chemical change. (GS)

Explains an error that occurs in calculating the conditions for a maximum value of a rate expression for a bimolecular reaction. The rate expression is derived using the Langmuir adsorption isotherm to relate gas pressures and corresponding surface coverages. (GS)

Presents evidence which indicates that standard sodium chloride and zinc chloride solutions should not be stored in polyethylene containers. (GS)

Two objectives of the course are the removal of student-student competition replacing it with student-content involvement, and the improvement of the level of understanding of organic chemistry. These objectives are approached through a modified Keller plan with a series of study guides and quizzes as the core material. (GS)

Describes a method (involving a Hach Colorimeter and simplified procedures) that can be used for the analysis of up to 56 different chemical constituents of water. Presents the results of student analysis of waters of Fulton and Montgomery counties in New York. (GS)