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Journal of Chemical Education | 442 |
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Peer reviewed
Seager, Spencer L.; Swenson, Karen T. – Journal of Chemical Education, 1987
Describes a program in which six experiments in chemistry were used in an elementary school science program. Discusses the problems encountered in initiating the program, and some of the ways the problems were solved. Lists the six experiments, along with the reaction or process being studied, and the application of each. (TW)
Descriptors: Chemistry, Demonstrations (Educational), Diagrams, Elementary Education
Peer reviewed
Bent, Henry A. – Journal of Chemical Education, 1987
Discusses the properties of carbon dioxide in its solid "dry ice" stage. Suggests several demonstrations and experiments that use dry ice to illustrate Avogadro's Law, Boyle's Law, Kinetic-Molecular Theory, and the effects of dry ice in basic solution, in limewater, and in acetone. (TW)
Descriptors: Chemical Reactions, Chemistry, College Science, Demonstrations (Educational)
Peer reviewed
Gilbert, George L., Ed. – Journal of Chemical Education, 1987
Describes two demonstrations to illustrate characteristics of substances. Outlines a method to detect the changes in pH levels during the electrolysis of water. Uses water pistols, one filled with methane gas and the other filled with water, to illustrate the differences in these two substances. (TW)
Descriptors: Chemical Bonding, Chemical Reactions, Chemistry, College Science
Peer reviewed
Kelter, Paul B.; And Others – Journal of Chemical Education, 1987
Discusses the current state of space-related research and manufacturing techniques. Focuses on the areas of spectroscopy, materials processing, electrochemistry, and analysis. Provides examples and classroom application for using these aspects of the space program to teach chemistry. (TW)
Descriptors: Chemical Analysis, Chemistry, College Science, Fuels
Peer reviewed
Tykodi, R. J. – Journal of Chemical Education, 1987
Urges chemistry teachers to have students annotate the chemical reactions in aqueous-solutions that they see in their textbooks and witness in the laboratory. Suggests this will help students recognize the reaction type more readily. Examples are given for gas formation, precipitate formation, redox interaction, acid-base interaction, and…
Descriptors: Abstracts, Chemical Reactions, Chemistry, College Science
Peer reviewed
Garcia, Arcesio – Journal of Chemical Education, 1987
Describes a method designed to balance oxidation-reduction chemical equations. Outlines a method which is based on changes in the oxidation number that can be applied to both molecular reactions and ionic reactions. Provides examples and delineates the steps to follow for each type of equation balancing. (TW)
Descriptors: Chemical Reactions, Chemistry, College Science, Higher Education
Peer reviewed
Kauffman, George B. – Journal of Chemical Education, 1987
Proposes that preparative chemistry is an important and integral part of chemistry as a whole, and an excellent way to introduce students to descriptive chemistry. Provides an outline for students to follow for converting and transforming salts. Suggests a set of general guidelines for studying anion and cation transformations. (TW)
Descriptors: Chemical Reactions, Chemistry, College Science, Guidelines
Peer reviewed
Perkins, Ronald I. – Journal of Chemical Education, 1987
Outlines five simple and inexpensive methods for students to use in identifying unknown substances. Provides a table of general solubility data for ions, a suggested list of unknown substances that can be tested using the methods described, and some prelaboratory information. (TW)
Descriptors: Chemical Analysis, Chemical Reactions, Chemistry, College Science
Peer reviewed
Lucas, C. Robert; Walsh, Kelly A. – Journal of Chemical Education, 1987
Suggests ways to avoid some of the problems students have learning the principles of organometallic chemistry. Provides a description of an experiment used in a third-year college chemistry laboratory on molybdenum. (TW)
Descriptors: Chemical Bonding, Chemical Reactions, Chemistry, College Science
Peer reviewed
Haight, Gilbert P.; Jones, Loretta L. – Journal of Chemical Education, 1987
Discusses some difficulties presented by the use of clock reactions with large numbers of students in illustrating the determination of rate laws and the deduction of a mechanism. Suggests the videotaping of a clock reaction without narration to be used with students in stages so that observations can be recorded. (TW)
Descriptors: Audiovisual Aids, Chemical Reactions, Chemistry, College Science
Peer reviewed
Silberman, Robert; And Others – Journal of Chemical Education, 1987
Discusses the need to develop laboratory practical examinations in chemistry which attempt to measure students higher order thinking skills and conceptual understanding rather than simply their laboratory skills. Examples of examination questions being used in general chemistry laboratory courses at the State University of New York at Cortland are…
Descriptors: Chemistry, Cognitive Processes, College Science, Concept Formation
Peer reviewed
Ruoff, Peter; Riley, Megan – Journal of Chemical Education, 1987
Describes a chemistry experiment where an alkaline ice-cold permanganate solution is reduced by adding dropwise a cold diluted hydrogen peroxide solution. Outlines the course of the reduction through the various oxidation states of manganese with their characteristic colors. (TW)
Descriptors: Chemical Reactions, Chemistry, College Science, Demonstrations (Educational)
Peer reviewed
Giuliano, Vincenzo; Rieck, John Paul – Journal of Chemical Education, 1987
Discusses the use of thin-layer chromatography (TLC) in the chemical laboratory as a quantitative method for determining the molecular weights of organic compounds. Describes a simple method which provides an illustration of the importance of polarity on solubility and demonstrates the effectiveness of TLC as a quantitative tool. (TW)
Descriptors: Chemistry, Chromatography, College Science, Demonstrations (Educational)
Peer reviewed
Sherman, Marie – Journal of Chemical Education, 1987
Discusses the range of wavelengths of the electromagnetic spectrum considered to be the visible portion. Describes a demonstration designed to help students understand the relation between the wavelength measurements on a spectrophotometer such as the Spectronic 20 and the actual colors of light being used. (TW)
Descriptors: Chemistry, College Science, Demonstrations (Educational), Higher Education
Peer reviewed
Gadek, Frank J. – Journal of Chemical Education, 1987
Describes how to construct an electronic device to be used in conductivity experiments using a 35 millimeter film canister, nine volt battery replacement snaps, a 200-300 ohm resistor, and a light-emitting diode. Provides a diagram and photographs of the device. (TW)
Descriptors: Chemistry, College Science, Electronic Equipment, Higher Education