The self-motion of an ester boat is investigated depending on the physicochemical properties of the surface-active substance. The results show that the ester boat moves towards the higher surface tension generating as the driving force.

Demonstrations assessment techniques are shown to be more effective in the teaching process, as compared to the normally used laboratory topics and aids. These assessments improve learning and help students learn the principles or concepts underlying chemistry.

Laboratory experiment is conducted to give the students practical experience with the principles of electronic absorbance spectroscopy. This straightforward approach creates a powerful tool for exploring many of the aspects of quantitative absorbance spectroscopy.

The analysis describes an NMR experiment for the general chemistry laboratory, which employs an unknown imidazole solution to measure the pH values. The described mechanism can also be used for measuring the acidity within the isolated cells.

Raman Spectroscopy was the main topic of the 14th Annual James L. Waters Symposium, which was held in March 2003 at Pittcon. The development of the enabling technologies that have made Raman spectroscopy a routine analysis tool in many laboratories worldwide is discussed.

The evolution of Raman instrumentation from the time of the initial report of the phenomenon in 1928 to 2006 is discussed. The first instruments were prism-based spectrographs using lenses for collimation and focusing and the 21st century instruments are also spectrographs, but they use CCD cameras. The Lippmann filter technology that appears to…

The impact of array detectors in the field of Raman spectroscopy and all low-light-level spectroscopic techniques is examined. The high sensitivity of array detectors has allowed Raman spectroscopy to be used to detect compounds at part per million concentrations and to perform Raman analyses at advantageous wavelengths.

The laboratory experiment, which acts as a capstone, integrated lecture-laboratory exercise involving solution preparation, pH buffers, [E[subscript]H] (reduction potential) buffers, organic reaction mechanisms, reaction kinetics, and instrumental analysis is presented. The students completing the lecture and laboratory exercises could gain a…

This publication, the last of three course materials in the medical laboratory technician field adapted from the Military Curriculum Materials for Use in Technical and Vocational Education series, was designed as a refresher course for student self-study and evaluation. It can be used by advanced students or beginning students participating in a…

This journal features articles covering various aspects of dissection. "Biology--The Study of Life" (George Russell) offers students experiments that do not require using invasive procedures. "Animal Cruelty--Behind the Scenes" (Zoe Weil) describes sources of laboratory animals. "Doing without Dissection" (Juliana…

Increasingly, business and education professionals recognize the centrality of oral communication in everyday activities, and such a competency is best developed through repeated instruction and application. However, few colleges or universities have implemented speech communication laboratories, and where they do exist, they are often constrained…

Describes an undergraduate physical chemistry experiment in which an azeotropic mixture is studied using the vapor pressures of the components as functions of temperature and the azeotropic composition and temperature at one pressure. Discusses in detail the mathematical treatment of obtained thermodynamic data. (MLH)

Describes an undergraduate physical chemistry experiment in which the acid catalyzed hydrolysis of sucrose is used to determine the catalytic coefficient of the hydronium ion, the catalyst in this reaction. (MLH)

Discusses difficulties encountered in the determination of the thermal conductivity of a gas. Provides analyses of one particular set of data. (CP)

Details construction of an inexpensive electronic auditory device in which the resistance in parallel with the device is inversely proportional to the frequency of sound produced. (CP)