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Curbelo, Estela; Cerda, Maria F.; Mendez, Eduardo – Journal of Chemical Education, 2007
The study describes the various thermal equilibrium conditions, which should be taken care for while designing or selecting the plastic and glass microscale containers for physical chemistry experiments. The results show that the thermal equilibrium completely depends on the material of the container for the same volume and thickness.
Descriptors: Structural Analysis (Science), Plastics, Chemistry, Thermodynamics
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Brigandi, Laura M.; Leber, Phyllis A.; Yoder, Claude H. – Journal of Chemical Education, 2005
A project involving the synthesis of several naturally occurring copper double salts using simple aqueous conditions is reported. The ions present in the compound are analyzed using colorimetric, gravimetric, and gas-analysis techniques appropriate for the first-year laboratory and from the percent composition, the empirical formula of each…
Descriptors: Chemistry, Science Instruction, Undergraduate Students, Introductory Courses
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Ramos, Luiz Antonio; Prieto, Katia Roberta; Carvalheiro, Eder Tadeu Gomes; Carvalheiro, Carla Cristina Schmitt – Journal of Chemical Education, 2005
The use of crude flower extracts to the principle of analytical chemistry automation, with the flow injection analysis (FIA) procedure developed to determine hypochlorite in household bleaching products was performed. The FIA comprises a group of techniques based on injection of a liquid sample into a moving, nonsegmented carrier stream of a…
Descriptors: Chemistry, College Students, Science Instruction, Undergraduate Students
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Blyth, Kristy M.; Mullings, Lindsay R.; Philips, David N.; Pritchard, David; van Bronswijk, Wilhelm – Journal of Chemical Education, 2005
The chemical and instrumental methods used in the study of transition-metal complexes provide a complete determination of their structure, bonding, and properties. It unites concepts of analytical, inorganic, and physical chemistry in a way that students might appreciate that these areas of chemistry are not different.
Descriptors: Holistic Approach, Chemistry, Science Education, Science Instruction
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Hill, J. O.; Magee, R. J. – Journal of Chemical Education, 1988
Describes several experiments using the techniques of thermal analysis and thermometric titrimetry. Defines thermal analysis and several recent branches of the technique. Notes most of the experiments use simple equipment and standard laboratory techniques. (MVL)
Descriptors: Chemical Analysis, Chemical Reactions, Chemistry, College Science
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Etzel, A. J.; And Others – Journal of Chemical Education, 1986
Describes an experiment in which stretching a rubber band can be used to compare the statistical theory of rubber elasticity with its continuum mechanics counterpart. Employs the use of the equation of the state of rubber elasticity and the Mooney-Rivlin equation. (TW)
Descriptors: Chemistry, College Science, Demonstrations (Educational), Experiential Learning
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Sayed, Yousry; And Others – Journal of Chemical Education, 1989
Describes several common synthetic organic transformations involving alkenes, alcohols, alkyl halides, and ketones. Includes concepts on kinetic versus thermodynamic control of reaction, rearrangement of a secondary carbocation to a tertiary cation, and the effect of the size of the base on orientation during elimination. (MVL)
Descriptors: Chemical Reactions, Chemistry, College Science, Inorganic Chemistry
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DeVore, T. C.; Gallaher, T. N. – Journal of Chemical Education, 1986
Describes a physical chemistry experiment which uses spectroscopy to measure the heat of formation of Na2SiF6. Discusses the opportunities for students to see the use of a familiar instrument in an unfamiliar application, emphasizing that there are often many ways to attack problems in science. (TW)
Descriptors: Chemistry, College Science, Demonstrations (Educational), Experiential Learning