Provides procedures and comments for 15 short chemical experiments suitable for classroom demonstrations or public displays about chemistry. (MLH)

Described is a student preparation of YBa2Cu3O8-x, a classroom demonstration of its superconductivity, and an analytical chemistry experiment dealing with the oxidation state of copper in the material. (RH)

Described is a workshop for grades 5-8 school teachers and students related to synthetic polymers. Participants become familiar with polymer theory and practice experiments they can use in class. Sources of materials used in the workshop are listed. (RH)

Described is an experiment to investigate the plasticizer content in polyvinyl chloride (PVC) products. The experiment is designed for college students using an instrumental analysis laboratory. (RH)

Presents a class exercise designed to find out how well students understand the nature and consequences of the mass action law and Le Chatelier's principle as applied to chemical equilibria. The exercise relates to a practical situation and provides simple relations for maximizing equilibrium quantities not found in standard textbooks. (JN)

Describes a convincing and practical hands-on way to illustrate to students one part per million. (ZWH)

Describes a laboratory activity in which polystyrene spheres in two preassembled motifs must be arranged to form a tetrahedral structure. (MLH)

Describes a method of producing photographs of X-ray diffraction patterns using Kodak X-ray film. (SL)

Describes selected activities from the Technology-People-Environment (TPE) curriculum designed to improve the technological literacy of secondary school students. (SL)

Discusses the technique of utilizing "silent" demonstrations, demonstrations with a minimal of instructor initiated information, for teaching secondary level chemistry. (SL)

Describes an experiment for second year students designed to illustrate lectures devoted to electrochemistry and thermodynamics. (SL)

Described is a simple demonstration that provides a way to determine if a given sample contains even a small fraction of superconducting material. The repulsion of the powder from a magnetic field is indicative of superconductivity. (RH)

This is part two in a series on classroom demonstrations of polymer principles. Described is how large molecules can be assembled from subunits (the process of polymerization). Examples chosen include both linear and branched or cross-linked molecules. (RH)

Described is a teaching method for chemistry that gives college students practice in experimental design. Students are given a problem and required to design a procedure to solve the problem. Problems increase in complexity as the students progress through the courses. (RH)