Copper is isolated from a 5-cent coin with the help of electrolysis. This experiment is useful for conceptual understanding of the significance of reduction potentials in situation of competition for electrons.

The water absorption in chickpeas (dried legumes) is analyzed. The chickpea experiment serves as an introduction to the concepts of osmosis, mass transfer and diffusion.

A laboratory experiment for students in the last year of degree program in chemical engineering, chemistry, or industrial chemistry is presented. It models the chlor-alkali process, one of the most important industrial applications of electrochemical technology and the second largest industrial consumer of electricity after aluminium industry.

Surface tensions gradients were generated in a thin liquid film because of the local increase in temperature, for demonstration purposes. This is performed using a simple experiment and allows different alternatives for heat generation to be used.

Complexes of pyrazole-derived ligands are very popular due to the ability of the pyrazolato anion to form bridged polymetallic compounds in which the metals are held close enough to react with small molecules or facilitate magnetic exchange. The preparation of monodentate pyrazole and 3,5-dimethylpyrazole (DMHpz) nickel species and the…

A study of the vibrational spectroscopy of the cis and trans isomers of 1,2-dichloroethylene provides an excellent opportunity to learn the applications group theory in laboratories. The necessity of using infrared (IR) spectroscopy and Raman spectroscopy in making full vibrational assignments is illustrated.

The development of an FI analyzer for chemiluminescence detection using a low-cost photoiodide is presented. The experiment clearly demonstrates in a single interdisciplinary project the way in which different aspects in chemical instrumentation fit together to produce a working analytical system.

The two things that usually attract students include sports and observing the unexpected. These activities which can be adapted for any class investigating the physical property of density, addresses both using an interactive, cross-disciplinary, open-ended investigation centered on determining mathematically whether a bowling ball will sink or…

An experiment, in which students were given the opportunity to perform molecular dynamics simulations on a series of molecular liquids using the Amber suite of programs, is presented. They were introduced to both physical theories underlying classical mechanics simulations and to the atom-atom pair distribution function.

An instructive experiment for the synthesis of ethyl trans-cinnamate, a pleasant smelling ester used in perfumery and flavoring by the reaction of benzaldehyde with the stable ylid triphenylphosphorane is described. The synthesis, workup and characterization of trans-cinnamate may be accomplished in a single laboratory session with commonly…

For small colleges, the use of invertebrates in undergraduate learning laboratory experiments may be a valuable alternative to the use of vertebrate species. This article describes a habituation experiment using terrestrial hermit crabs. All of the materials required are inexpensive and readily available. What makes this experiment unique is that…

The present review of object individuation in infancy is divided into five sections. The first section is a brief history of the field and an outline of the development of efficient methods for studying object individuation among infants. Sections 2 and 3 are structured around the empirical evidence obtained by using two different kinds of basic…

Four experiments are reported in which people organize a space hierarchically when they estimate particular locations in that space. Earlier work showed that people subdivide circles into quadrants bounded at the vertical and horizontal axes, biasing their estimates towards prototypical diagonal locations within those spatial categories…

Two experiments investigate whether relations that link the constituents of compounds during compound formation (e.g., "teapot" is formed by combining "tea" and "pot" using the relation "head noun FOR modifier") also influence the processing of familiar compounds. Although there is evidence for the use of such relations in forming compounds,…

In four experiments using albino rats in an ABA fear renewal paradigm, we studied conditioned fear in the A test context following extinction in Context B. Conditioned suppression of operant responding was the index of fear. In Experiments 1-3, we found that extinguishing a feared cue in compound with a putative conditioned inhibitor of fear led…