Presents a simple demonstration of optical activity and a simple method to show crystalline growth. (MLH)

Presents demonstrations on (1) ion exchange (softening hard water) and (2) vapor pressure measurement. (RH)

Two demonstrations are presented: a verification of the discontinuity of matter based on the law of definite proportions, and a series of consecutive chemical reactions featuring reversible equilibria. (BB)

Presents demonstrations concerning the thermodynamic properties of rubber elasticity and simultaneous reactions of acetone. (MLH)

Presents two demonstrations for classroom use related to precipitation of ferrous hydroxide and to variation of vapor pressure with temperature. The former demonstration is simple and useful when discussing solubility of ionic compounds electrode potential of transition elements, and mixed valence compounds. (Author/SA)

A lecture demonstration is presented for comparing titration curves. A plot of pH vs volume of strong base is produced by connecting the external output of a pH meter to a strip recorder. Thus, pH is recorded as a function of time. (BB)

Describes demonstrations of the ring strain inherent in cyclopropanes and cyclobutanes and their resultant high reactivity, and selective solubility principles. (MLH)

Discusses the preparation of compounds representing six oxidation states of manganese; demonstrations involving these compounds are described. (MLH)

Presents several demonstrations in spectroscopy. (RH)

Describes two demonstration experiments for the chemistry laboratory: (1) Thermodynamic vs kinetic control and (2) Acid-Catalyzed Hydrolysis of Starch. (MA)

Describes the use of various indicators to demonstrate chemical reactions; the display of sodium as a shiny metal; and the illustration of the attainment of chemical equilibrium with beakers of chemicals and an overhead projector. (MLH)

Lecture-demonstrations are presented on the topics of measurement errors and formation and dissolution of precipitates. (BB)

Described are demonstrations designed to reveal the important "nonsolvent" properties of water through its interaction with a toy called "Magic Sand" and other synthetic silica derivatives, especially those bonded with organic moities. The procedures for seven demonstrations along with a discussion of the effects are presented. (CW)

Describes two demonstrations: one that illustrates the attainment of equilibrium in first-order reactions by changing the volumes of two beakers of water at a specified rate, and another that illustrates the role of indicators in showing pH changes in buffer solutions. (MLH)

Three demonstrations are described: (1) a variation of the iodine clock reaction in which a cassette tape recording of the William Tell Overture accompanies color changes as solutions are mixed; (2) a crystallization demonstration using sodium acetate; and (3) lecture-demonstrations creating colored colloidal dispersions from clear solutions. (CS)