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Journal of Chemical Education | 99 |
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Education Level
Location
Canada | 1 |
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State-of-the-Art pH Electrode Quality Control for Measurements of Acidic, Low Ionic Strength Waters.
Peer reviewed
Stapanian, Martin A.; Metcalf, Richard C. – Journal of Chemical Education, 1990
Described is the derivation of the relationship between the pH measurement error and the resulting percentage error in hydrogen ion concentration including the use of variable activity coefficients. The relative influence of the ionic strength of the solution on the percentage error is shown. (CW)
Descriptors: Chemical Analysis, Chemistry, College Science, Error of Measurement
Peer reviewed
Szafran, Zvi; And Others – Journal of Chemical Education, 1989
Discussed are four major advantages to the use of microscale laboratories for teaching chemistry. Included are effects on waste generation, laboratory safety, reagent variety, and laboratory efficiency. (CW)
Descriptors: Chemistry, College Science, Graduate Study, Hazardous Materials
Peer reviewed
Harwood, John J. – Journal of Chemical Education, 1989
Reported are the results of a survey conducted to identify which analytical methods are most commonly used in nonacademic analytical laboratories. Laboratory supervisors' ratings of various aspects of chemical education are included. (CW)
Descriptors: Chemistry, College Science, Educational Assessment, Graduate Study
Peer reviewed
Carter, Henry A. – Journal of Chemical Education, 1989
This article focuses on the nature of acidity in pulp paper as found in comic books and library collections. Some of the various factors that contribute to the deterioration of paper are considered from a chemical perspective. (CW)
Descriptors: Books, Chemical Reactions, Chemistry, College Science
Peer reviewed
Mills, Ian M. – Journal of Chemical Education, 1989
Discussed are some of the issues which were considered when the International Union of Pure and Applied Chemistry revised its guide to notation in physical chemistry. Included are the choice between SI and non-SI units and choosing sensible names and symbols for quantities. (CW)
Descriptors: Atomic Structure, Chemical Nomenclature, Chemistry, Classification
Peer reviewed
Estevez, Gentil A.; And Others – Journal of Chemical Education, 1989
Proposed is a flow-chart and related formulas to obtain expressions for the derivatives of the old thermodynamic function in terms of new variables, the new function and its derivatives, and derivatives of the old function, involving only measurable quantities. (CW)
Descriptors: Calculus, Chemical Equilibrium, Chemistry, College Science
Peer reviewed
Chen, Jyh-Horung – Journal of Chemical Education, 1989
Described is a method that can be used to obtain molecular or atomic term symbols. Several examples accompany an explanation of the method. (CW)
Descriptors: Atomic Structure, Chemical Nomenclature, Chemistry, College Science
Peer reviewed
Moran, P. J.; Gileadi, E. – Journal of Chemical Education, 1989
Discussed is some of the confusion encountered in electrochemistry due to misunderstandings of sign conventions and simple mathematical errors. Clarified are issues involving emf series, IUPAC sign conventions, calculation of cell potentials, reference electrodes, the polarity of electrodes in electrochemical devices, and overpotential. (CW)
Descriptors: Chemistry, College Science, Computation, Electricity
Peer reviewed
Journal of Chemical Education, 1989
Presented are reviews of two computer software packages for Apple II computers; "Organic Spectroscopy," and "Videodisc Display Program" for use with "The Periodic Table Videodisc." A sample spectrograph from "Organic Spectroscopy" is included. (CW)
Descriptors: Atomic Structure, Chemistry, College Science, Computer Software Reviews
Peer reviewed
Loeffler, Paul A. – Journal of Chemical Education, 1989
Presented is a simple, unified approach to chemical nomenclature which employs the distinction between the terms chemical substance and chemical species. The classification of matter and chemical nomenclature are used as examples to illustrate this scheme. (CW)
Descriptors: Chemical Nomenclature, Chemistry, Classification, Cognitive Development
Peer reviewed
Tabbutt, Frederick D.; And Others – Journal of Chemical Education, 1989
This paper reports on the success of a laboratory teaching technique for teaching undergraduate chemistry. Discussed are the premises of the approach, and the use of the computer, the explorations, and the seminar which are included in the course. (CW)
Descriptors: Chemistry, College Science, Computer Uses in Education, Course Descriptions
Peer reviewed
Birk, James P., Ed. – Journal of Chemical Education, 1989
Presented is a simple laboratory set-up for teaching microprocessor-controlled data acquisition as a part of an instrumental analysis course. Discussed are the experimental set-up, experimental procedures, and technical considerations for this technique. (CW)
Descriptors: Chemical Analysis, Chemistry, College Science, Computer Interfaces
Peer reviewed
Sowa, J. R. – Journal of Chemical Education, 1989
Described is an apparatus which can be made for student use in performing organic qualitative analysis. The flask replaces the need for more expensive equipment. Discussed are reagents, equipment preparation, experimental procedures, and sample preparation. (CW)
Descriptors: Chemical Analysis, Chemical Reactions, College Science, Higher Education
Peer reviewed
Adams, John B., Jr. – Journal of Chemical Education, 1989
Described is a procedure by which the performance of chemical hoods can be tested. This procedure uses a mixture of dry ice and water to create a "smoke" for use in the test. Implications for sash design, performance evaluations and testing under standard and nonstandard conditions are discussed. (CW)
Descriptors: Chemistry, College Science, Higher Education, Laboratory Equipment
Peer reviewed
Birk, James P.; Foster, John – Journal of Chemical Education, 1989
Presented is a method of constructing a wide variety of molecular models from inexpensive, durable materials. Equipment, supplies, atomic sizes, bond lengths and bond angles, assembly, and painting are discussed. (CW)
Descriptors: Chemistry, College Science, Higher Education, Instructional Materials