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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

Showing 2,011 to 2,025 of 8,904 results
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Erhardt, Walt – Journal of Chemical Education, 2007
Note is presented on the standard lab from a second year chemistry course. The lab "Determining which of the Seven FD&C Food-Approved Dyes are Used in Making Green Skittles", familiarizes students with the operation of the CHEM2000 UV-Vis spectrophorometer.
Descriptors: Chemistry, Laboratory Experiments, Science Experiments, Spectroscopy
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Gerber, Ralph W.; Oliver-Hoyo, Maria – Journal of Chemical Education, 2007
The development of a new low-cost, six-electrode instrument for measuring the electrical properties of the self-assembled monolayers of gold particles is being described. The system can also be used to measure conductive liquids, except for those that contain aqua region.
Descriptors: Chemistry, Measurement Equipment, Science Equipment, College Science
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Bentley, Anne K.; Weaver, Gabriela C.; Russell, Cianan B.; Fornes, William L.; Choi, Kyoung-Shin; Shih, Susan M. – Journal of Chemical Education, 2007
A simple and cost-effective experiment for the development and characterization of semiconductors using Uv-vis spectroscopy is described. The study shows that the optical properties of ZnO films can be easily modified by forming Zn[subscript 1-x] Co[subscript x]O solid solutions via spray pyrolysis.
Descriptors: Optics, Spectroscopy, Laboratory Experiments, Chemistry
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Duchovic, Ronald J.; Vilensky, Joel A. – Journal of Chemical Education, 2007
The Meyer-Clarke synthetic method was used in the German process for large scale production of mustard gas during World War I, which clearly shows the historical connection of synthesis of mustard gas.
Descriptors: Chemistry, Science History, War, World History
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Sanger, Michael J. – Journal of Chemical Education, 2007
Study is conducted to find whether the students learning chemistry using different instructional methodologies develop comparable chemistry content knowledge. Results found the comparable chemistry content knowledge among the samples.
Descriptors: Majors (Students), Chemistry, Elementary Education, Pedagogical Content Knowledge
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Weidenhammer, Jeffrey D. – Journal of Chemical Education, 2007
A circuit board analysis of the atomic absorption spectroscopy, which is used to measure lead content in a course for nonscience majors, is being presented. The experiment can also be used to explain the potential environmental hazards of unsafe disposal of various used electronic equipments.
Descriptors: Spectroscopy, Nonmajors, Chemistry, Science Instruction
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Wanke, Randall; Stauffer, Jennifer – Journal of Chemical Education, 2007
An advanced undergraduate chemistry laboratory experiment to study the advantages and hazards of the coupling of NIR spectroscopy and chemometrics is described. The combination is commonly used for analysis and process control of various ingredients used in agriculture, petroleum and food products.
Descriptors: Spectroscopy, Laboratory Experiments, Chemistry, Undergraduate Study
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Vitz, Ed – Journal of Chemical Education, 2007
The Vitamin C Clock Reaction has now been adapted to serve as a student laboratory experiment in the education process of high-school and college-level general chemistry. Despite of imparting valuable knowledge, it also may be hazardous, as the tincture of iodine contains inflammable substances that may cause burning on prolonged exposure.
Descriptors: Laboratory Experiments, Science Experiments, Chemistry, Secondary School Science
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Hagan, William J., Jr.; Edie, Dennis L.; Cooley, Linda B. – Journal of Chemical Education, 2007
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.
Descriptors: Chemistry, Organic Chemistry, Laboratory Experiments, Science Experiments
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Walker, Edward B.; Davies, Don R.; Campbell, Mike – Journal of Chemical Education, 2007
Trans-fat is a general term, which is mainly used to describe the various trans geometric isomers present in unsaturated fatty acids. Various techniques are now used for a quantitative measurement of the amount of trans-fats present in foods and cooking oil.
Descriptors: Food, Chemistry, Spectroscopy, Statistical Analysis
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Murov, Steven – Journal of Chemical Education, 2007
The Reaction-Map of Organic Chemistry lists all the most commonly studied reactions in organic chemistry on one page. The discussed Reaction-Map will act as another learning aide for the students, making the study of organic chemistry much easier.
Descriptors: Organic Chemistry, Instructional Materials, Charts, College Science
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Humbel, Stephane – Journal of Chemical Education, 2007
A simple method is proposed based on energies obtained with the Huckel theory to compute the weights of the structures. The Huckel-Lewis CI technique extends to the Huckel theory the field of the resonance between Lewis structures.
Descriptors: Organic Chemistry, Computation, Chemistry, Theories
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Halpern, Arthur M.; Ramachandran, B. R.; Glendening, Eric D. – Journal of Chemical Education, 2007
A report is presented to describe how students can be empowered to construct the full, double minimum inversion potential for ammonia by performing intrinsic reaction coordinate calculations. This work can be associated with the third year physical chemistry lecture laboratory or an upper level course in computational chemistry.
Descriptors: Chemistry, Computation, Advanced Courses, College Science
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Martinez, L. M.; Videa, M.; Mederos, F.; Mesquita, J. – Journal of Chemical Education, 2007
The construction of a new highly-sensitive, computer-interfaced, differential thermal analysis (DTA) device, used for gathering different information about the chemical reactions, is described. The instrument provides a better understanding about the phase transitions, phase diagrams and many more concepts to the students.
Descriptors: Chemistry, Instrumentation, Computer Uses in Education, Science Instruction
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Stilts, Corey E.; Fisher, Roxanne – Journal of Chemical Education, 2007
Bioassays are commonly used to test the biological activity of chemicals and other exercises are presented in which students synthesize plant hormones. Lab exercise is conducted using commercially available auxins and auxin regulating compounds.
Descriptors: Science Activities, Organic Chemistry, Laboratory Experiments, Science Experiments
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