Considers carbon-carbon multiple bonds in terms of Pauling's bent bond model, which allows direct calculation of double and triple bonds from the length of a CC single bond. Lengths of these multiple bonds are estimated from direct measurements on "bent-bond" models constructed of plastic tubing and standard kits. (CS)

Provides procedures appropriate for a high school chemistry class that demonstrate the Arrhenius law by determining the heat of vaporization of a volatile liquid. (CS)

Presents a brief overview of the important processes and techniques used industrially for forming thin films. (HM)

Described is the Independent Learning Project for Advanced Chemistry (ILPAC) which is sponsored by the Inter London Education Authority and utilized by 120 A-level students in the London schools. There are 21 written units included which contain explanations, exercises, instructions for practicals, tests, and assignments. (Author/DS)

Described is a gel diffusion experiment that permits the completion of duplicate diffusion runs within a three-hour laboratory session. Information included for the short-duration gel diffusion experiment is the diffusion cell, the experiment, data treatment, and the expected results of the experiment. (Author/DS)

Outlines a variety of laboratory procedures, discussions, and demonstrations including Brownian motion, a synchronous motor, jet engine, atmospheric pressure vortex ring machines, solid chemical dispensing, testing household detergents, wallchart storage, pollution by industrial chemicals, an optical illusion, and buoyancy. (GS)

Describes the preparation and use of a film for presenting demonstrations during chemistry lectures. Includes student responses to and costs of these filmed demonstrations. Instructors provide their own documentary since the film lacks a sound track. (JN)

Describes the computer system and potentiometric titration as a simple experiment to illustrate several advantages and pitfalls in using the small computer in laboratory instruction. (Author/JN)

Discusses several areas to be considered in designing a faculty development program in the physical sciences, including needs, types of programs, instructional development, and personal and professional development. (CS)

Describes the Program for the Advancement of the College Teaching of Science (PACTS), which provides a sabbatical leave opportunity for college professors to study pedagogy. (CS)

Lists equipment and materials needed and procedures for analyzing soil, in which secondary school students experience practical applications to acid-base reactions, pH, oxidation-reduction, precipitation and solubility. (CS)

Summarizes papers presented at the Sixth Biennial Conference on Chemical Education in the areas of faculty development, teaching assistants, and teaching strategies. A bibliography of 16 presented papers related to these topics is attached. (CS)

Discusses concept of covalent bonding as related to homonuclear diatomic molecules. Article draws attention to the existence of bound rare gas and alkaline earth diatomic molecules. Summarizes their molecular parameters and offers spectroscopic data. Strength and variation with distance of interatomic attractive forces is given. (Author/SA)

Questions are analyzed from various ACS-NSTA High School Chemistry Tests. Results show more than 50 percent of test questions deal with only six concepts and 70 percent evaluate aspects of only nine concepts. Results may be useful to teachers of college preparatory chemistry regarding subject matter and math operations. (Author/SA)

Describes an undergraduate organic chemistry course at Colorado State University that employs student-designed laboratory procedures in the laboratory. An outline illustrating the use of this approach is included. Advantages over the traditional approach are detailed. (BT)