Presents a way of displaying the dimensions of quantities in graphical 3D form. Quantities represented include length, time, and mass. (GS)

Describes bonding properties that account for the difference in toxicity between hydrogen cyanide and carbon monoxide. Uses the concepts of intermolecular and intramolecular forces in explaining the operation of pressure sensitive adhesives. Gives a definition of a cubic crystal class. (GS)

Gives agruments and support for the development of decentralized short-loop systems to take the place of an overconnected cobweb economy which increases problems for society. (BR)

Lists 85 articles and books, 50 with annotations. Extends the coverage of Resource Letter TLA-1 by including music. (GH)

Describes a tentative hypothesis for the control of plant branching (apical dominance). Explores the mechanism by which apical buds inhibit the growth of axillary buds on the same shoot. Presents an up-to-date picture of the problem and gives economic implications of the study. (BR)

Describes a set of experiments for the catalytic oxidation of alkenes to aldehydes and ketones which can be carried out in a test tube by the student. (BR)

Describes an experiment on learning transfer which has implications for the order in which the topics of baryons, leptons, charge, energy, and momentum are taught. (GS)

Bulk of the course deals with reactions of the carbonyl group. Topic selection and ordering were based on the need to prepare the students for a succeeding biochemistry course, and the lecture-test method of instruction was adopted because of efficiency demands of teaching. (GS)

Illustrates some important characteristics of photosynthesis, concentration dependencies of reaction rates, temperature effects, and effects of changes in actinic wavelength. (GS)

Experience in using a user-friendly software, Mathcad, in the undergraduate chemical reaction engineering course is discussed. Example problems considered for illustration deal with simultaneous solution of linear algebraic equations (kinetic parameter estimation), nonlinear algebraic equations (equilibrium calculations for multiple reactions and…

Weights suspended from a lever arm separate evacuated hemispheres allowing estimation of atmospheric pressure to within five percent of the barometric reading. An illustration and a reference to von Guericke's demonstration are provided. (GH)