| Journal Articles: 21 results |
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Teaching Structure–Property Relationships: Investigating Molecular Structure and Boiling Point Peter M. Murphy
The boiling points for 392 organic compounds are tabulated by carbon chain length and functional group to facilitate a wide range of inquiry-based activities that correlate the effects of chemical structure on physical properties.
Murphy, Peter M. J. Chem. Educ. 2007, 84, 97.
Molecular Properties / Structure |
Physical Properties
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A Developmental History of Polymer Mass Spectrometry Matthew J. Vergne, Robert P. Lattimer, and David M. Hercules
This review provides a historical perspective of the development of polymer mass spectrometry, divided into three eras: the small molecule era (1950s and 1960s); the macromass era (1970s and 1980s); and the modern era (the late 1980s to the present).
Vergne, Matthew J.; Lattimer, Robert P.; Hercules, David M. J. Chem. Educ. 2007, 84, 81.
Mass Spectrometry |
Materials Science |
Physical Properties |
Molecular Properties / Structure |
Instrumental Methods
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An Engaging Illustration of the Physical Differences among Menthol Stereoisomers Edward M. Treadwell and T. Howard Black
The differences and similarities in the physical behavior of enantiomers and diastereomers can easily be demonstrated using the commercial stereoisomers (-)-menthol, (+)-menthol, (+)-isomenthol, and (+)-neomenthol. Thin-layer chromatography and melting point determinations clearly show that diastereomers have different physical properties from enantiomers and each other, but that enantiomers have identical physical properties in achiral environments. By obtaining a mixed melting point and optical rotations the difference in enantiomers can be observed.
Treadwell, Edward M.; Black, T. Howard. J. Chem. Educ. 2005, 82, 1046.
Chirality / Optical Activity |
Stereochemistry |
Thin Layer Chromatography |
Diastereomers |
Enantiomers |
Physical Properties
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An Elementary Picture of Dielectric Spectroscopy in Solids: Physical Basis Mario F. García-Sánchez, Jean-Claude M'Peko, A. Rabdel Ruiz-Salvador, Froilan Fernández-Gutierrez, Geonel Rodríguez-Gattorno, Adolfo Delgado, and Yuri Echevarría
The principles of DS of solids are discussed starting from simple concepts. The physical basis is presented, emphasizing the meaning of the magnitudes and phenomena involved, including the microscopic aspects of the chemical nature of solids. The applications, advantages, and limitations of DS are also discussed. Some examples are given that provide a practical overview of the main ideas as well as to show the usefulness of the technique.
García-Sánchez, Mario F.;M'Peko, Jean-Claude; Ruiz-Salvador, A. Rabdel; Fernández-Gutierrez, Froilan; Rodríguez-Gattorno, Geonel; Delgado, Adolfo; Echevarría, Yuri. J. Chem. Educ. 2003, 80, 1062.
Conductivity |
Materials Science |
Physical Properties |
Solids |
Spectroscopy |
Laboratory Computing / Interfacing |
Student-Centered Learning
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Spectroscopy for Schools and Colleges [CD-ROM] (by the Royal Society of Chemistry and GlaxoWellcome) Thomas H. Eberlein
Interactive CR-ROM to assist in learning the fundamentals of interpreting spectroscopy in organic chemistry.
Eberlein, Thomas H. J. Chem. Educ. 2002, 79, 1204.
Spectroscopy |
NMR Spectroscopy |
IR Spectroscopy |
Mass Spectrometry |
Physical Properties |
Molecular Properties / Structure |
Enrichment / Review Materials
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Measurement of Evaporation Rates of Organic Liquids by Optical Interference Scott A. Riley, Nathan R. Franklin, Bobbie Oudinarath, Sally Wong, David Congalton, and A. M. Nishimura*
Laser light reflects and refracts at the air-surface interface; the latter beam then reflects at the lower liquid glass interface. These two beams are focused onto a photodiode. The optical interference occurs as a result of the different distances traveled by the two beams and the intensity at the detector oscillates as the liquid evaporates. The frequency of oscillation is used to determine the rate of evaporation.
Riley, Scott A.; Franklin, Nathan R.; Oudinarath, Bobbie; Wong, Sally; Congalton, David; Nishimura, A. M. J. Chem. Educ. 1997, 74, 1320.
Instrumental Methods |
Surface Science |
Thermodynamics |
Physical Properties |
Lasers
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Boiling Point and Molecular Weight Rich, Ronald L.
No relationship between boiling points and molecular weight.
Rich, Ronald L. J. Chem. Educ. 1996, 73, A294.
Physical Properties |
Hydrogen Bonding |
Noncovalent Interactions
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Letters
No relationship between boiling points and molecular weight.
J. Chem. Educ. 1996, 73, A294.
Physical Properties |
Hydrogen Bonding |
Noncovalent Interactions
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First Day in Organic Lab Christine K. F. Hermann
This experiment is designed to introduce students to the techniques of reflux, distillation, gas chromatography, and the determination of boiling point and melting point during one lab period.
J. Chem. Educ. 1996, 73, 852.
Separation Science |
Gas Chromatography |
Physical Properties |
Qualitative Analysis |
Instrumental Methods
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Identifying polymers through combustion and density Blumberg, Avrom A.
Using analytical chemistry class experiences as a way to not only quantitatively and qualitatively analyze substances, but also to gain practical experience with characteristic chemical reactions of those substances.
Blumberg, Avrom A. J. Chem. Educ. 1993, 70, 399.
Physical Properties |
Qualitative Analysis |
Polymerization |
Quantitative Analysis
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Plastic density determination by titration Bruzan, Raymond.; Baker, Douglas
A density lab involving volumetric analysis.
Bruzan, Raymond.; Baker, Douglas J. Chem. Educ. 1993, 70, 397.
Physical Properties |
Titration / Volumetric Analysis |
Quantitative Analysis
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Textile fiber identification: An organic-polymer laboratory Flachskam, Robert L., Jr.; Flachskam, Nancy W.
A laboratory that introduces student to an important application of polymers-textile fibers.
Flachskam, Robert L., Jr.; Flachskam, Nancy W. J. Chem. Educ. 1991, 68, 1044.
Natural Products |
Plant Chemistry |
Applications of Chemistry |
Qualitative Analysis |
Physical Properties |
Materials Science
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Identification of unknowns by melting point and thin-layer chromatography in combination Levine, Samuel G.
Identification from among 12 unknowns by melting point and thin-layer chromatography.
Levine, Samuel G. J. Chem. Educ. 1990, 67, 972.
Physical Properties |
Thin Layer Chromatography |
Qualitative Analysis
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A reusable apparatus for the convenient determination of the molecular weight of air- or moisture-sensitive compounds Zoellner, Robert W.
Construction and application of an apparatus for the determination of the apparent molecular weight of air- or moisture sensitive compounds employing Singer's method of isothermal distillation.
Zoellner, Robert W. J. Chem. Educ. 1990, 67, 714.
Laboratory Equipment / Apparatus |
Physical Properties
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Identification of polymers in university class experiments Bowen, Humphry J. M.
With a certain amount of skill and experience, most students can learn how to identify common polymers.
Bowen, Humphry J. M. J. Chem. Educ. 1990, 67, 75.
Physical Properties |
Spectroscopy |
Chromatography
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Refractive index - A simple demonstration experiment Mishra, S. K.; Parasher, P.; Sharma, P. D.
Adding benzene and bromobenzene to glass wool makes it disappear.
Mishra, S. K.; Parasher, P.; Sharma, P. D. J. Chem. Educ. 1989, 66, 852.
Physical Properties
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Organic lecture demonstrations Silversmith, Ernest F.
Organic chemistry may not be known for its spectacular, attention getting chemical reactions. Nevertheless, this author describes a few organic chemistry reactions that put points across and generate interest. This article provides a convenient sources of demonstrations and urges others to add to the collection. Demonstrations concerning: carbohydrates, spectroscopy, proteins, amines, carbohydrates, carboxylic acids, and much more.
Silversmith, Ernest F. J. Chem. Educ. 1988, 65, 70.
Molecular Properties / Structure |
Nucleophilic Substitution |
Acids / Bases |
Physical Properties |
Alkenes |
Stereochemistry |
Enantiomers |
Chirality / Optical Activity |
Aldehydes / Ketones |
Alcohols
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Color classification of coordination compounds Poncini, Laurence; Wimmer, Franz L.
Color classification of some yellow coordination compounds and a proposal that colored compounds be classified by reference to a standard color-order system incorporating a color dictionary.
Poncini, Laurence; Wimmer, Franz L. J. Chem. Educ. 1987, 64, 1001.
Coordination Compounds |
Physical Properties
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Analysis of alcohols McCullough, Brother Thomas
Identifying unknown alcohols using boiling point and viscosity measurements.
McCullough, Brother Thomas J. Chem. Educ. 1984, 61, 68.
Alcohols |
Physical Properties |
Qualitative Analysis
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Molecular weight determination of aldehydes and ketones. A quantitative organic experiment Steinhaus, Ralph K.
The reaction between semicarbazide and an unknown ketone is used to determine molecular weight.
Steinhaus, Ralph K. J. Chem. Educ. 1973, 50, 293.
Physical Properties |
Quantitative Analysis |
Aldehydes / Ketones |
Oxidation / Reduction
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A separation and identification experiment for elementary organic chemistry laboratory Laughton, Paul M.
The student selects a test tube containing two unknowns and is told only that they have been selected from two of three possible groups: a primary or tertiary amine, an aldehyde or ketone, and an acid or phenol. The components are to be separated, their physical properties determined, their categories assigned, and one specific derivative prepared for each.
Laughton, Paul M. J. Chem. Educ. 1960, 37, 133.
Separation Science |
Qualitative Analysis |
Amines / Ammonium Compounds |
Aldehydes / Ketones |
Acids / Bases |
Phenols |
Physical Properties |
Synthesis
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