Describes a simple way for groups to view a demonstration of Brownian Motion using a laser and liquid suspension. (AIM)

Discusses the impact of various factors on the "charring reaction" of a carbohydrate with concentrated sulfuric acid including the type of sugar, the degree of fineness of the sugar crystals, and the amount of water added. (JRH)

Describes a chemistry outreach program where graduate student volunteers perform shows to excite high school students about science. Lists the experiments and demonstrations performed in the shows, and concludes that this outreach benefits both the high school student audience and the graduate student volunteers. Contains 21 references. (JRH)

Describes an experiment to demonstrate Boyle's law that provides pressure measurements in a familiar unit (psi) and makes no assumptions concerning atmospheric pressure. Items needed include bathroom scales and a 60-ml syringe, castor oil, disposable 3-ml syringe and needle, modeling clay, pliers, and a wooden block. Commercial devices use a…

Describes an experiment using a plant pathogenic fungus in which students learn to follow aseptic techniques, grow and produce spores of a fungus, use a hemacytometer for enumerating spores, prepare serial dilutions, grow and inoculate plants, isolate a pure culture using agar streak plates, and demonstrate the four steps of Koch's postulates.…

Describes an inexpensive, easily prepared demonstration to teach the concepts of human blood grouping, antigen-antibody reactions, and medical transfusions. (ZWH)

Teachers often use demonstrations to prepare students for a science experiment. This article describes a demonstration method to ensure that students are not supplied with all the answers before the actual experiment and to help them to remain an active part of the science lesson. (ZWH)

Presents a demonstration of sublimation, in which a solid is directly converted into the gaseous state, using an overhead projector. (MKR)

Presents a procedure to demonstrate how the speed of sound in air or within a denser gas can be calculated quickly and accurately in the laboratory. (MKR)

Describes the construction of a Tesla coil using a car coil and presents various experiments for which it can be used. (JRH)

In these years of shortened budgets, teachers are becoming more and more inventive in designing science teaching tools and experiments. This manual contains instructions for building a few such tools, either invented or improved on by teachers affiliated with the Institute for Chemical Education (ICE). The tools are created from low cost and…

Thermochromism is the reversible change of color of a solid when heated or cooled. Describes the preparation of thermochromic compounds that exhibit sharp thermochromic transitions. (DKM)

Describes a laboratory exercise containing a practical series of experiments that novice students can perform within two hours. The exercise provides a confirmation of van't Hoff's law while placing more emphasis on osmotic flow than pressure. Students can determine parameters such as the reflection coefficient which stress the interaction of both…

Presents an overhead projector demonstration that uses the idea of color fading to demonstrate reaction kinetics and diffusion controlled reaction kinetics. (JRH)

This book contains 101 investigations for chemistry classrooms. Topics include: (1) Physical Properties; (2) Reactions of Some Elements; (3) Reactions Involving Gases; (4) Energy Changes; (5) Solutions and Solubility; (6) Transition Metals and Complex Ions; (7) Kinetics and Equilibrium; (8) Acids and Bases; (9) Oxidation-Reduction; (10)…