| Journal Articles: 150 results |
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Microscale Demonstration of the Paramagnetism of Liquid Oxygen with a Neodymium Magnet Bruce Mattson
When a neodymium magnet is brought near a suspended glass tube containing a small amount of liquid oxygen, the tube is attracted to the magnet, demonstrating oxygen's paramagnetism. In larger quantities the blue color of liquid oxygen is readily observable.
Mattson, Bruce. J. Chem. Educ. 2007, 84, 1296.
Descriptive Chemistry |
Gases |
Magnetic Properties |
MO Theory |
Molecular Properties / Structure
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Laboratory Experiments on the Electrochemical Remediation of the Environment. Part 7: Microscale Production of Ozone Jorge G. Ibanez, Rodrigo Mayen-Mondragon, M. T. Moran-Moran, Alejandro Alatorre-Ordaz, Bruce Mattson, and Scot Eskestrand
Ozone, a powerful oxidizing and disinfecting agent, is produced electrochemically in the undergraduate laboratory with simple equipment and under very mild conditions. Tests are given to characterize it, to observe its action in simulated environmental applications, and to measure its rate of production.
Ibanez, Jorge G.; Mayen-Mondragon, Rodrigo; Moran-Moran, M. T.; Alatorre-Ordaz, Alejandro; Mattson, Bruce; Eskestrand, Scot. J. Chem. Educ. 2005, 82, 1546.
Aqueous Solution Chemistry |
Descriptive Chemistry |
Electrochemistry |
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus |
Microscale Lab |
Oxidation / Reduction |
Reactions
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The Determination of the Percent of Oxygen in Air Using a Gas Pressure Sensor James Gordon and Katherine Chancey
A new detection method is applied to a classic experiment in which gaseous atmospheric oxygen in a test tube is reacted with the iron in steel wool to produce rust. A gas pressure sensor interfaced to a calculator-based data collection system was used to measure the percent of oxygen in the air as the reaction proceeded. The results from the calculator-based experiment were compared to the results from a more traditional water-measurement experiment. The average percent of oxygen obtained using the calculator system was 19.4 0.4%.
Gordon, James; Chancey, Katherine. J. Chem. Educ. 2005, 82, 286.
Atmospheric Chemistry |
Gases |
Oxidation / Reduction |
Reactions
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Fractional Distillation of Air and Other Demonstrations with Condensed Gases Maria Oliver-Hoyo and William L. Switzer, III
This demonstration builds upon the commonly performed liquefaction of air not only to show the presence of nitrogen and oxygen, but also the presence of two other components, carbon dioxide and water. Several extensions are suggested: one to show boiling point elevation in solution and another to show the elevation of both boiling point and sublimation point with pressure. No special apparatus is required permitting presentations to audiences in a variety of settings. These demonstrations give the opportunity to discuss properties of gases, solution chemistry, and phase equilibria.
Oliver-Hoyo, Maria; Switzer, William L., III. J. Chem. Educ. 2005, 82, 251.
Gases |
Qualitative Analysis |
Atmospheric Chemistry |
Phases / Phase Transitions / Diagrams |
Separation Science
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Hydrogen Sulfide Jay A. Young
The hazards of hydrogen sulfide are discussed.
Young, Jay A. J. Chem. Educ. 2005, 82, 202.
Laboratory Management |
Laboratory Equipment / Apparatus
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Nitrogen: It Always Needs a Fix Kathryn R. Williams
The fixation of nitrogen was a popular topic in early issues of the Journal of Chemical Education. This column, From Past Issues, briefly summarizes articles on the nonbiological methods for nitrogen fixation.
Williams, Kathryn R. J. Chem. Educ. 2005, 82, 194.
Industrial Chemistry |
Agricultural Chemistry
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The Formula for Ammonia Monohydrate Stephen J. Hawkes
The reality of NH4OH was argued in J. Chem. Educ. and elsewhere a decade ago. Further evidence is now available. My colleague Darrah Thomas has calculated the geometry and bond lengths of H5NO using Gaussian. The calculation was done using the D95 basis set and the B3LYP method.
Hawkes, Stephen J. J. Chem. Educ. 2004, 81, 1569.
Covalent Bonding
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A Small-Scale and Low-Cost Apparatus for the Electrolysis of Water Per-Odd Eggen and Lise Kvittingen
This article describes how to construct two simple, inexpensive, and illustrative apparatuses using disposable polyethene pipets and floral wire for electrolysis of water. These apparatuses suit various grades and curricula.
Eggen, Per-Odd; Kvittingen, Lise. J. Chem. Educ. 2004, 81, 1337.
Laboratory Equipment / Apparatus |
Oxidation / Reduction |
Electrochemistry
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Mass Spectrometry for the Masses Jared D. Persinger, Geoffrey C. Hoops, and Michael J. Samide
In this article, we describe an experiment for an introductory chemistry course that incorporates the use of mass spectrometry for sample analysis. Several different air samples are collected that represent various chemical processes, and the composition of the air sample is predicted on the basis of known chemical principles. A gas chromatograph-mass spectrometer is used to analyze these samples, and the relative quantities of nitrogen, oxygen, carbon dioxide, water, and argon are calculated. On the basis of the data, the hypothesized sample composition is validated.
Persinger, Jared D.; Hoops, Geoffrey C.; Samide, Michael J. J. Chem. Educ. 2004, 81, 1169.
Mass Spectrometry |
Atmospheric Chemistry |
Green Chemistry |
Nonmajor Courses |
Oxidation / Reduction |
Photosynthesis |
Gases
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The Singlet States of Molecular Oxygen Jean-Pierre Puttemans and Georges Jannes
Although the purpose of the article The Visible Spectrum of Liquid Oxygen in the General Chemistry Laboratory is an analysis of the two-moleculesone-photon absorption spectrum of oxygen, it nevertheless assigns arrangements of the electrons in an energy diagram to the two singlet states of molecular oxygen which do not seem to be correct in our opinion.
Puttemans, Jean-Pierre; Jannes, Georges. J. Chem. Educ. 2004, 81, 639.
Molecular Properties / Structure |
MO Theory |
UV-Vis Spectroscopy
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The Singlet States of Molecular Oxygen Jean-Pierre Puttemans and Georges Jannes
Although the purpose of the article The Visible Spectrum of Liquid Oxygen in the General Chemistry Laboratory is an analysis of the two-moleculesone-photon absorption spectrum of oxygen, it nevertheless assigns arrangements of the electrons in an energy diagram to the two singlet states of molecular oxygen which do not seem to be correct in our opinion.
Puttemans, Jean-Pierre; Jannes, Georges. J. Chem. Educ. 2004, 81, 639.
Molecular Properties / Structure |
MO Theory |
UV-Vis Spectroscopy
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Some History of Nitrates Dennis W. Barnum
The history of saltpeter is an interesting combination of chemistry, world trade, technology, politics, and warfare.
Barnum, Dennis W. J. Chem. Educ. 2003, 80, 1393.
Consumer Chemistry |
Geochemistry |
Agricultural Chemistry |
Applications of Chemistry
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Nitrogen, Liquid Jay A. Young
Properties, hazards, and storage requirements for liquid nitrogen.
Young, Jay A. J. Chem. Educ. 2003, 80, 1133.
Laboratory Equipment / Apparatus |
Laboratory Management |
Physical Properties
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Hydrogen Peroxide, 3% Jay A. Young
Properties, hazards, and storage requirements for 3% hydrogen peroxide.
Young, Jay A. J. Chem. Educ. 2003, 80, 1132.
Laboratory Equipment / Apparatus |
Laboratory Management |
Physical Properties
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Decomposition Kinetics of Hydrogen Peroxide: Novel Lab Experiments Employing Computer Technology Dorota A. Abramovitch, Latrice K. Cunningham, and Mitchell R. Litwer
Using a sensor to measure changes in the pressure of oxygen produced by the decomposition of hydrogen peroxide as a means of analyzing this reaction and factors that affect its rate.
Abramovitch, Dorota A.; Cunningham, Latrice K.; Litwer, Mitchell R. J. Chem. Educ. 2003, 80, 790.
Gases |
Laboratory Computing / Interfacing |
Kinetics
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Liquid Oxygen Hazards Jonathan Mitschele
Risk of detonation if liquid oxygen comes into contact with grease, along with Web addresses concerning the hazards of liquid oxygen.
Mitschele, Jonathan. J. Chem. Educ. 2003, 80, 486.
Laboratory Management
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A Demonstration of Acid Rain and Lake Acidification: Wet Deposition of Sulfur Dioxide Lisa M. Goss
Demonstration of the wet deposition of sulfur dioxide in the atmosphere.
Goss, Lisa M. J. Chem. Educ. 2003, 80, 39.
Acids / Bases |
Atmospheric Chemistry
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The Liquid Nitrogen Fountain Robin McRae, Jeffrey A. Rahn, Timothy W. Beamer, and Norm LeBret
Pouring liquid nitrogen into a one-half liter plastic soda bottle and sealing with a large balloon.
McRae, Robin; Rahn, Jeffrey A.; Beamer, Timothy W.; LeBret, Norm . J. Chem. Educ. 2002, 79, 1220.
Liquids
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Sulfur (S8) Jay A. Young
Properties, hazards, and storage requirements for sulfur.
Young, Jay A. J. Chem. Educ. 2002, 79, 1063.
Laboratory Management |
Physical Properties
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Application of Datalogger in Observing Photosynthesis Martin M. F. Choi, Pui Shan Wong, and Tak Pong Yiu
Using a datalogger and dissolved-oxygen sensor to monitor the liberation of dissolved oxygen in the photosynthesis of seaweed.
Choi, Martin M. F.; Wong, Pui Shan; Yiu, Tak Pong. J. Chem. Educ. 2002, 79, 980.
Plant Chemistry |
Laboratory Equipment / Apparatus |
Laboratory Computing / Interfacing
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Response to Lowe's Potential-Energy-Only Models Lowe, John P.
Discussion of the suitability of a potential-only model for the successive ionization energies of sulfur for an introductory chemistry course.
Lowe, John P. J. Chem. Educ. 2002, 79, 430.
Atomic Properties / Structure |
Quantum Chemistry |
Theoretical Chemistry
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Response to Lowe's Potential-Energy-Only Models (re J. Chem. Educ. 2000, 77, 155-156) Frank Rioux and Roger L. DeKock
Discussion of the suitability of a potential-only model for the successive ionization energies of sulfur for an introductory chemistry course.
Rioux, Frank; DeKock, Roger L. J. Chem. Educ. 2002, 79, 429.
Atomic Properties / Structure |
Quantum Chemistry |
Theoretical Chemistry
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The Visible Spectrum of Liquid Oxygen in the General Chemistry Laboratory Frazier Nyasulu, John Macklin, and William Cusworth III
Examination of the spectrum of liquid oxygen and testing several hypotheses to explain the pattern of spectral lines observed.
Nyasulu, Frazier; Macklin, John; Cusworth, William, III. J. Chem. Educ. 2002, 79, 356.
MO Theory |
UV-Vis Spectroscopy |
Molecular Properties / Structure
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Just Breathe: The Oxygen Content of Air JCE Editorial Staff
Students estimate the percent oxygen (volume) in air using steel wool in a test tube that is inverted in a beaker of water. Oxygen in the trapped air reacts with iron to form rust, and the water level rises inside the test tube; within 30-45 minutes, the majority of oxygen is consumed.
JCE Editorial Staff. J. Chem. Educ. 2001, 78, 512A.
Electrochemistry |
Gases |
Oxidation / Reduction
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Humic Acids: Marvelous Products of Soil Chemistry Geoffrey Davies, Elham A. Ghabbour, and Cornelius Steelink
Classification, physical and chemical characteristics, formation, structure and sources of humic substances.
Davies, Geoffrey; Ghabbour, Elham A.; Steelink, Cornelius. J. Chem. Educ. 2001, 78, 1609.
Agricultural Chemistry |
Metals |
Natural Products |
Plant Chemistry |
Water / Water Chemistry |
Applications of Chemistry
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Learning the Functional Groups: Keys to Success Shannon Byrd and David P. Hildreth
Classification activity and scheme for learning functional groups.
Byrd, Shannon; Hildreth, David P. J. Chem. Educ. 2001, 78, 1355.
Nomenclature / Units / Symbols
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Determination of the Universal Gas Constant, R. A Discovery Laboratory David B. Moss and Kathleen Cornely
Discovery laboratory in which groups of students collect oxygen, hydrogen, and nitrogen gas over water and determine the value of the universal gas constant, R, using the ideal gas law.
Moss, David B.; Cornely, Kathleen. J. Chem. Educ. 2001, 78, 1260.
Gases
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Chemical Laboratory Information Profile: Sulfuric Acid (approx. 98%) Jay A. Young
Properties, hazards, and storage requirements for concentrated sulfuric acid.
Young, Jay A. J. Chem. Educ. 2001, 78, 722.
Laboratory Management |
Physical Properties |
Acids / Bases
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Analysis of an Oxygen Bleach: A Redox Titration Lab Christine L. Copper and Edward Koubek
Students balance the reaction of H2O2 and MnO4 in two different ways (one assuming that H2O2 is the oxygen source and a second assuming that MnO4 is the oxygen source), determine which of these balanced equations has the correct stoichiometry by titrating a standard H2O2 solution with KMnO4, and use the correct balanced equation to determine the mass percent of H2O2 in a commercially available bleach solution.
Copper, Christine L.; Koubek, Edward. J. Chem. Educ. 2001, 78, 652.
Quantitative Analysis |
Oxidation / Reduction |
Stoichiometry |
Titration / Volumetric Analysis |
Consumer Chemistry
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Disappearing-Reappearing Rabbit Trick: A New Twist to an Old Liquid Nitrogen Demonstration Elaine K. Haub
A magic hat with a suitable container inserted holds the liquid nitrogen. Instead of a regular balloon, I use a balloon animal in the shape of a rabbit. The rabbit "disappears" as it is lowered into the hat and "reappears" when it is removed from the hat.
Haub, Elaine K. J. Chem. Educ. 2001, 78, 46.
Gases
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A Novel Experiment for Fast and Simple Determination of the Oxygen Content in the Air Metodija Najdoski and Vladimir M. Petrusevski
The reaction between nitric oxide (NO) and oxygen is used for determination of the oxygen content in the air. The nitrogen dioxide thus produced is dissolved in water. The volume decrease of the gas enables quick and accurate enough determination of the O2 content. The results of 20 measurements give %O2 = 21.04 0.63.
Najdoski, Metodija; Petrusevski, Vladimir M. J. Chem. Educ. 2000, 77, 1447.
Gases |
Qualitative Analysis |
Quantitative Analysis |
Atmospheric Chemistry
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Determination of the Oxygen Content of Air Per Christian Braathen
Determining the oxygen content of air using vinegar and steel wool.
Braathen, Per Christian. J. Chem. Educ. 2000, 77, 1410.
Atmospheric Chemistry |
Gases |
Quantitative Analysis
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Paradoxes, Puzzles, and Pitfalls of Incomplete Combustion Demonstrations Ed Vitz
Paper is burned in a closed container containing sufficient oxygen to consume all the paper. Paradoxically, the flame expires while half of the paper remains. This demonstrates that thermodynamics or stoichiometry is insufficient to explain everyday chemical processes, and that kinetics is often necessary. The gases in the container are analyzed by GC before and after combustion, and the results are examined in detail.
Vitz, Ed. J. Chem. Educ. 2000, 77, 1011.
Gases |
Kinetics |
Stoichiometry
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Variations on the "Whoosh" Bottle Alcohol Explosion Demonstration Including Safety Notes John J. Fortman, Andrea C. Rush, and Jennifer E. Stamper
The explosion or burning of methanol, ethanol, n-propanol, and isopropanol in large small-necked bottles when ignited with a match has been studied with respect to the nature of the alcohol, temperature, concentration dilutions with water, oxygen concentration, plastic versus glass bottles, and salts added for color.
Fortman, John J.; Rush, Andrea C.; Stamper, Jennifer E. J. Chem. Educ. 1999, 76, 1092.
Gases |
Alcohols
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A Further Demonstration of Sulfite-Induced Redox Cycling of Metal Ions Initiated by Shaking Horacio D. Moya, Eduardo Almeida Neves, and Nina Coichev
Details of a fascinating laboratory demonstration of the sulfite-induced redox cycling of Ni(II)/Ni(III), which is initiated by shaking the solution in the presence of air, are reported. The balance between the sulfite and oxygen concentration controls the direction of the overall reaction.
Moya, Horacio D.; Neves, Eduardo Almeida; Coichev, Nina. J. Chem. Educ. 1999, 76, 930.
Oxidation / Reduction |
Metals |
Catalysis
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The Persistence of the Candle-and-Cylinder Misconception James P. Birk and Anton E. Lawson
There is a persistent misconception that when a lighted candle is supported in a container of water and a closed cylinder is lowered over the candle, the candle is extinguished after a time by complete consumption of the oxygen in the cylinder, with a volume change corresponding to the amount of oxygen in the air. This misconception has appeared in the literature periodically for many years. Here, we present a number of experiments that refute this misconception.
Birk, James P.; Lawson, Anton E. J. Chem. Educ. 1999, 76, 914.
Gases |
Atmospheric Chemistry |
Quantitative Analysis |
Reactions
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Determination of Percent Oxygen in Air (author's reply) Fang, Chin-Hsiang
Claim that a simple combustion reaction can be used to show the % oxygen in air.
Fang, Chin-Hsiang J. Chem. Educ. 1999, 76, 898.
Atmospheric Chemistry
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Determination of Percent Oxygen in Air Parsons, Leonard
Claim that a simple combustion reaction cannot be used to show the % oxygen in air.
Parsons, Leonard J. Chem. Educ. 1999, 76, 898.
Atmospheric Chemistry
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Advertising in this Issue
Caution when burning hydrogen / oxygen mixtures.
J. Chem. Educ. 1999, 76, 757.
Atmospheric Chemistry
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A Precise Method for Determining the CO2 Content of Carbonate Materials Donald L. Pile, Alana S. Benjamin, Klaus S. Lackner, Christopher H. Wendt, and Darryl P. Butt
The design and use of a buret apparatus for CO2 gas capture and mass determination are described. The derivation of a comprehensive equation to determine the CO2 mass and percent carbonation of the material is outlined. Experimental factors such as temperature and pressure, including elevation effects, and apparatus parameters are discussed and incorporated into one general equation.
Pile, Donald L.; Benjamin, Alana S.; Lackner, Klaus S.; Wendt, Christopher H.; Butt, Darryl P. J. Chem. Educ. 1998, 75, 1610.
Laboratory Equipment / Apparatus |
Gases |
Quantitative Analysis
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Generating Water-Soluble Noxious Gases: An Overhead Projector Demonstration Sally Solomon, Maria Oliver-Hoyo, and Chinhyu Hur
A simple, inexpensive apparatus to generate and collect water-soluble noxious gases as an overhead projector demonstration can be made from two small beakers and a Petri dish. The detection and generation of sulfur dioxide and nitrogen dioxide are described.
Solomon, Sally; Oliver-Hoyo, Maria; Hur, Chinhyu. J. Chem. Educ. 1998, 75, 1581.
Gases |
Oxidation / Reduction |
Carbohydrates |
Toxicology
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Formation and Dimerization of NO2 Meyer, Edwin F.
Significant problems with the results of this experiment.
Meyer, Edwin F. J. Chem. Educ. 1998, 75, 1088.
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Thermal Physics (and Some Chemistry) of the Atmosphere Stephen K. Lower
An exploration of how the temperature of the atmosphere varies with altitude can serve as a useful means of illustrating some important principles relating to the behavior of gases and to the absorption and transformation of radiant energy.
Lower, Stephen K. J. Chem. Educ. 1998, 75, 837.
Atmospheric Chemistry |
Gases
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A Simplified Determination of Percent Oxygen in Air Chin-Hsiang Fang
A simple, safe, and rapid experiment for determining the percent of oxygen in air is given.
Fang, Chin-Hsiang. J. Chem. Educ. 1998, 75, 58.
Gases |
Qualitative Analysis |
Quantitative Analysis |
Quantitative Analysis
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A Modified Hydrogen/Oxygen Balloon Demonstration Ian J. McNaught
Using a ratio of 1:2 volumes of hydrogen and oxygen for balloons as instead of a 2:1 ratio for safety.
McNaught, Ian J. J. Chem. Educ. 1998, 75, 52.
Gases |
Reactions
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Acid Rain Demonstration: The Formation of Nitrogen Oxides as a By-Product of High-Temperature Flames in Connection with Internal Combustion Engines Jerry A. Driscoll
This demonstration illustrates the formation of nitrogen oxides resulting from a high temperature flame.
Driscoll, Jerry A. J. Chem. Educ. 1997, 74, 1424.
Equilibrium |
Learning Theories |
Water / Water Chemistry |
Oxidation / Reduction
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A Discussion of Water Pollution in the United States and Mexico; with High School Laboratory Activities for the Analysis of Lead, Atrazine, and Nitrate Paul B. Kelter, Julie Grundman, David S. Hage, James D. Carr, and Carlos Mauricio Castro-Acuña
In the first part of this paper we present an overview of water pollution in the United States and Mexico, including sources, federal regulations and standards, and standard methods for the assessment of overall water quality. The second part of the paper focuses on three water pollutants, lead, atrazine, and nitrate.
Kelter, Paul B.; Grundman, Julie; Hage, David S.; Carr, James D.; Mauricio, Carlos. J. Chem. Educ. 1997, 74, 1413.
Water / Water Chemistry
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A Note on the Term "Chalcogen" William B. Jensen
It is argued that the best translation of the term "chalcogen" is "ore former." It is further suggested that the term chalcogenide should be replaced with the term chalcide in order to maintain a parallelism with the terms halogen and halide.
Jensen, William B. J. Chem. Educ. 1997, 74, 1063.
Nomenclature / Units / Symbols |
Periodicity / Periodic Table |
Descriptive Chemistry
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Observation of Magnetic Repulsion Acting on Nitrogen Bubble on Water Surface - A Simple Experiment of Studying Diamagnetic Property of Nitrogen Yukinori Matsuyama, Takashi Yasuoka, Syunmei Mitsuzawa, Tunetaka Sasaki
Observation of the paramagnetic property by a simple experiment showing the attraction of an oxygen bubble on the water surface to a magnet has been reported. In this article, we report the opposite behavior magnetic repulsion observed for a nitrogen bubble by the same method. [Third author's first name misspelled in hard copy and PDF.]
Matsuyama, Yukinori; Yasuoka, Takashi; Mitsuzawa, Syunmei; Sasaki, Tunetaka. J. Chem. Educ. 1997, 74, 943.
Learning Theories |
Magnetic Properties |
Atomic Properties / Structure
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The authors reply to "The Joys of Liquid Nitrogen" William T. Nolan and Thaddeus J. Gish
Agreement with Blatchley's interpretation.
Nolan, William R.; Gish, Thaddeus J. J. Chem. Educ. 1997, 74, 617.
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The Joys of Liquid Nitrogen Ronald C. Blatchley
Air cooled by liquid nitrogen is mixture of liquid nitrogen and oxygen.
Blatchley, Ronald C. J. Chem. Educ. 1997, 74, 616.
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Oxygen from Hydrogen Peroxide: An Experimental Modification James H. Burness
This paper describes a simple modification to the generation of oxygen gas experiment which eliminates the need for a pencil coated with petroleum jelly and dry yeast. This elimination not only prevents falling pieces of yeast from prematurely starting the reaction, but at the same time makes the reaction faster and simplifies cleanup.
J. Chem. Educ. 1996, 73, 851.
Laboratory Equipment / Apparatus |
Gases |
Microscale Lab
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An Improved Container for Solutions of Yellow Phosphorous Stephen W. Wright
This short article suggests the use of the Sure/Pac cylinder system as an alternative to glass stoppered bottles for the storage of solutions of yellow phosphorous in carbon dioxide.
Wright, Stephen W. J. Chem. Educ. 1996, 73, 818.
Laboratory Equipment / Apparatus
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How to Offer the Optimal Demonstration of the Electrolysis of Water Rei E. Zhou
This article proposes the optimal conditions for lecture demonstration to ensure that the generated H2 and O2 in the electrolysis of water are in the ratio of 2:1, satisfying the reaction scheme.
Zhou, Rei E. J. Chem. Educ. 1996, 73, 786.
Water / Water Chemistry
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The Great SO2 Canister Case: Or, How to Stop Worrying and Dispose of a Bomb P. E. Spargo
Clever disposal of a sealed cylinder containing liquid SO2.
Spargo, P. E. J. Chem. Educ. 1995, 72, 1134.
Laboratory Management
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Entertaining Chemistry John F. Elsworth
"A Volcanic Serpent" (ammonium dichromate), "A Homemade Hydrogen Rocket", and "Johnny's Saga in Chemistry" (sulfuric acid + calcium carbonate) demonstrations.
Elsworth, John F. J. Chem. Educ. 1995, 72, 1128.
Reactions |
Acids / Bases |
Gases
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Carbohydrate Dehydration Demonstrations David A. Dolson, Rubin Battino, Trevor M. Letcher, K. H. Pegel, and N. Revaprasadu
Study of the dehydration of a carbohydrate by sulfuric acid and variables that influence the reaction (including type of sugar, sugar granule size, and amount of water added to sugar).
Dolson, David A.; Battino, Rubin; Letcher, Trevor M.; Pegel, K. H.; Revprasadu, N. J. Chem. Educ. 1995, 72, 927.
Carbohydrates |
Reactions
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Lewis Structures of Oxygen Compounds of 3p-5p Nonmetals Darel K. Straub
Procedure for writing Lewis structures of oxygen compounds of 3p-5p nonmetals.
Straub, Darel K. J. Chem. Educ. 1995, 72, 889.
Lewis Structures |
Molecular Properties / Structure |
Covalent Bonding |
Main-Group Elements
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Singlet Oxygen at the Laundromat David Keeports
Method for demonstrating the production of singlet molecular oxygen.
Keeports, David . J. Chem. Educ. 1995, 72, 822.
Atomic Properties / Structure
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Inhibition of Enzymatic Browning Reaction by Sulfite Kim, Hie-Joon
Laboratory procedure for demonstrating the function of sulfite as an effective food additive.
Kim, Hie-Joon J. Chem. Educ. 1995, 72, 242.
Enzymes |
Food Science |
Consumer Chemistry |
Industrial Chemistry
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The phases of sulfur Birdwhistell, Kurt R.
Demonstrating the phases of sulfur through viscosity differences.
Birdwhistell, Kurt R. J. Chem. Educ. 1995, 72, 56.
Phases / Phase Transitions / Diagrams |
Physical Properties
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A Melting Point Depression Activity Using Two Inorganic Substances DeMeo, Stephen
Measuring melting point depression using iodine and sulfur.
DeMeo, Stephen J. Chem. Educ. 1994, 71, 796.
Physical Properties |
Phases / Phase Transitions / Diagrams
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Solubility of CO2: A Variation of the Experiment Measuring Standard Molar Volume of a Gas Koster, David F.; Trimble, Russell F.
Carbon dioxide is formed in a molar volume experiment and the difference between the expected and actual volume of the gas is used to determine its solubility.
Koster, David F.; Trimble, Russell F. J. Chem. Educ. 1994, 71, 528.
Gases |
Precipitation / Solubility
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Hydrogen Peroxide Demo Curing the Brown Bottle-with-Black Cap Syndrome Sae, Andy
Comparing the reactivity of 3%, 12%, and 27% H2O2 solution.
Sae, Andy J. Chem. Educ. 1994, 71, 433.
Solutions / Solvents |
Aqueous Solution Chemistry
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Pyrotechnic Reactions Without Oxygen Wright, Stephen W.
Reaction of K3FeF6 with Al and poly(tetrafluoroethylene) with Mg.
Wright, Stephen W. J. Chem. Educ. 1994, 71, 251.
Oxidation / Reduction |
Reactions
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Cryophori, Hot Molecules, and Frozen Nitrogen Hunter, Paul W. W.; Knoespel, Sheldon L.
Freezing water and nitrogen at low atmospheric pressure.
Hunter, Paul W. W.; Knoespel, Sheldon L. J. Chem. Educ. 1994, 71, 67.
Thermodynamics |
Phases / Phase Transitions / Diagrams
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Using microscale chemistry: Hydrogen sulfide is not such a rotten idea Reel, Kevin
A clever alternative to waste treatment provides Advanced Placement students with a source of sulfide ions.
Reel, Kevin J. Chem. Educ. 1993, 70, 854.
Microscale Lab
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Sulfur Hexafluoride: Classroom Uses for an Unusual Compound Sullivan, Dan M.
A profile of one of the heaviest known gases and its possible safe uses in the classroom.
Sullivan, Dan M. J. Chem. Educ. 1993, 70, 100.
Gases |
Enrichment / Review Materials
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Microscale experiments: Dissolved oxygen and chloride determination in water Crosson, Mary; Gibb, Reen
Determining the dissolved oxygen and chloride content of water samples through titrations.
Crosson, Mary; Gibb, Reen J. Chem. Educ. 1992, 69, 830.
Microscale Lab |
Water / Water Chemistry |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis
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A demonstration of the molar volume of nitrogen gas Hughes, Elvin, Jr.
A graphic illustration and a calculation of the approximate molar volume of nitrogen gas.
Hughes, Elvin, Jr. J. Chem. Educ. 1992, 69, 763.
Gases |
Chemometrics
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Hot and cold running methane Stamm, Daniel M.
A series of interesting demonstrations involving liquid nitrogen.
Stamm, Daniel M. J. Chem. Educ. 1992, 69, 762.
Gases
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Micro-Kipp gas generators Wilson, Byron J.
An attention-getting microexperiment to illustrate chemical stoichiometry involving several rockets made from plastic Beral pipets.
Wilson, Byron J. J. Chem. Educ. 1991, 68, A297.
Microscale Lab |
Stoichiometry |
Laboratory Equipment / Apparatus
|
Use of liquid oxygen to support combustion Sullivan, Dan M.
Production, procedure, and safety of demonstrations involving liquid nitrogen in order to demonstrate: Charles' Law, production and properties of liquid oxygen, effects of concentration on reactions and reaction rates, liquefaction and boiling of oxygen kindling temperature, reactions between substances in two different states of matter, and comparison of partial and complete combustion.
Sullivan, Dan M. J. Chem. Educ. 1991, 68, 1036.
Physical Properties |
Gases |
Reactions |
Equilibrium
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Demonstration properties of sulfur dioxide Brouwer, H.
Demonstrations of properties of sulfur dioxide are timely, given current debates between Canada and the United States regarding acid rain.
Brouwer, H. J. Chem. Educ. 1991, 68, 417.
Acids / Bases |
Green Chemistry |
pH
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An inexpensive device for collection of samples of water for dissolved oxygen determination without air contact Favaretto, Lelio
This communication describes a simple and inexpensive device that permits the collection of water samples and fixation of dissolved oxygen by the Winkler method.
Favaretto, Lelio J. Chem. Educ. 1990, 67, 509.
Water / Water Chemistry |
Laboratory Equipment / Apparatus
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Observation of paramagnetic property of oxygen by simple method - A simple experiment for college chemistry and physics courses Shimada, Hiroshi; Yasuoka, Takashi; Mitsuzawa, Shunmei
The authors devised a demonstration in which a bubble of gaseous oxygen is used to demonstrate the paramagnetic property of oxygen rather than liquid oxygen.
Shimada, Hiroshi; Yasuoka, Takashi; Mitsuzawa, Shunmei J. Chem. Educ. 1990, 67, 63.
MO Theory |
Magnetic Properties
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On a Reaction Involving Oxygen and Metal Sulfides Hill, William D., Jr.
The role of iron(III) oxide as a catalyst in the production of oxygen by the thermal decomposition of potassium chlorate promoted the idea to use this oxide to repeat the reactions involving oxygen and the metal sulfides described in an earlier article.
Hill, William D., Jr. J. Chem. Educ. 1989, 66, 448.
Catalysis |
Reactions
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Ammonium hydroxide does not exist Yoke, John
No matter how the s and three p orbitals are hybridized, nitrogen can form a maximum of only four bonds.
Yoke, John J. Chem. Educ. 1989, 66, 310.
Atomic Properties / Structure |
Molecular Properties / Structure
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Respect those nitrates in the lab Nagel, Miriam C.
The prudent teacher will use many references, and cross references, when selecting experiments and demonstrations - particularly where nitrates are involved.
Nagel, Miriam C. J. Chem. Educ. 1989, 66, 248.
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Stoichiometry to the rescue (a calculation challenge) Ramette, Richard W.
Presentation of a question that would be suitable for a take-home exam or a problem set in a general or analytical chemistry course.
Ramette, Richard W. J. Chem. Educ. 1988, 65, 800.
Amines / Ammonium Compounds |
Gases |
Stoichiometry
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The interconversion of electrical and chemical energy: The electrolysis of water and the hydrogen oxygen fuel cell Roffia, Sergio; Conciallini, Vittorio; Paradisi, Carmen
The authors discuss some common drawbacks to typical electrolysis demonstrations and present an apparatus that overcomes these drawbacks.
Roffia, Sergio; Conciallini, Vittorio; Paradisi, Carmen J. Chem. Educ. 1988, 65, 272.
Laboratory Equipment / Apparatus |
Stoichiometry |
Electrochemistry
|
Oxidation numbers and their limitations Woolf, A. A.
An in-depth look at oxidation numbers of various elements in a number of different compounds.
Woolf, A. A. J. Chem. Educ. 1988, 65, 45.
Organometallics |
Oxidation State |
Oxidation / Reduction
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Heat of vaporization of nitrogen Hamlet, Peter
A very simple procedure for measuring the heat of vaporization of nitrogen.
Hamlet, Peter J. Chem. Educ. 1987, 64, 1060.
Phases / Phase Transitions / Diagrams |
Physical Properties |
Calorimetry / Thermochemistry
|
Percent oxygen in air Martins, George F.
Determines the percentage oxygen in air by reacting steel wool with oxygen.
Martins, George F. J. Chem. Educ. 1987, 64, 809.
Atmospheric Chemistry
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A spectacular demonstration: 2H2 + O2 -> 2H2O Skinner, James F.
Detonating hydrogen in a copper combustion chamber.
Skinner, James F. J. Chem. Educ. 1987, 64, 545.
Reactions |
Free Radicals
|
Iron(II) oxide Miller, Clifford D.
Producing the less common oxide of iron, FeO.
Miller, Clifford D. J. Chem. Educ. 1987, 64, 545.
Synthesis
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Carbon dioxide: Its principal properties displayed and discussed Bent, Henry A.
The principal properties of carbon dioxide demonstrated and discussed.
Bent, Henry A. J. Chem. Educ. 1987, 64, 167.
Physical Properties |
Phases / Phase Transitions / Diagrams |
Gases |
Kinetic-Molecular Theory
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Thermodynamics and reactions in the dry way Tykodi, Ralph J.
In dealing with reactions in the dry way, we can actually "see" in detail the workings of the thermodynamic machinery responsible for moving the reaction in the spontaneous direction. This note presents ideas at the general chemistry level.
Tykodi, Ralph J. J. Chem. Educ. 1986, 63, 107.
Thermodynamics |
Oxidation / Reduction
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Hydrogen peroxide in cleansing antiseptics Worley, John D.
The author shares a procedure for determining peroxide content by measuring the volume of oxygen released when the peroxide was oxidized by permanganate.
Worley, John D. J. Chem. Educ. 1983, 60, 678.
Oxidation / Reduction
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A simultaneous analysis problem for advanced general chemistry laboratories Leary, James J.; Gallaher, T. N.
The goal of this experiment is to determine the percentage Mg3N2 and the percentage Mg formed when magnesium metal is ignited in a crucible using a Bunsen burner.
Leary, James J.; Gallaher, T. N. J. Chem. Educ. 1983, 60, 673.
Quantitative Analysis |
Stoichiometry
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Inexpensive alternate chemical sources Stefanko, Joseph M.
Obtaining marble chips, sulfur, sodium chloride, zinc, lead, copper, cupric sulfate, and silver compounds from alternative sources.
Stefanko, Joseph M. J. Chem. Educ. 1982, 59, 670.
Laboratory Management
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A general chemistry experiment for the determination of the oxygen content of air Birk, James P.; McGrath, Larry; Gunter, S. Kay
A procedure and data for a general chemistry experiment for the determination of the oxygen content of air.
Birk, James P.; McGrath, Larry; Gunter, S. Kay J. Chem. Educ. 1981, 58, 804.
Quantitative Analysis
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Safety in oxygen atmospheres Knight, Homer T.; Isenberg, Norbert
A practical way to illustrate the influence of concentration on the rate of a chemical reaction is to show a simulated oxygen tent.
Knight, Homer T.; Isenberg, Norbert J. Chem. Educ. 1980, 57, 453.
Rate Law
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Biological oxygen demand O'Connor, Rod
A calculation regarding the volume of oxygen required to process a given volume of waste by a sewage treatment plant.
O'Connor, Rod J. Chem. Educ. 1980, 57, 209.
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Ultraviolet absorption of ozone Driscoll, Jerry A.
A demonstration of the absorption of ultraviolet radiation by ozone.
Driscoll, Jerry A. J. Chem. Educ. 1977, 54, 675.
Gases |
Atmospheric Chemistry
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The relationship of lead and sulfur in a chemical reaction Chapman, V. L.
Investigating the stoichiometric synthesis of lead and sulfur to form lead sulfide.
Chapman, V. L. J. Chem. Educ. 1977, 54, 436.
Reactions |
Stoichiometry
|
Lower valent oxo acids of phosphorus and sulfur Fernelius, W. C.; Loening, Kurt; Adams, Roy
Reviews current practice and some of the problems with partial solutions.
Fernelius, W. C.; Loening, Kurt; Adams, Roy J. Chem. Educ. 1977, 54, 30.
Nomenclature / Units / Symbols
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Singlet oxygen in aqueous solution: A lecture demonstration Shakhashiri, Bassam Z.; Williams, Lloyd G.
Lecture demonstrations involving chemiluminescence are useful for the purpose both of displaying chemical phenomena and of illustrating specific principles.
Shakhashiri, Bassam Z.; Williams, Lloyd G. J. Chem. Educ. 1976, 53, 358.
Photochemistry |
Reactions |
Oxidation / Reduction |
Spectroscopy
|
Properties of air-A freshman chemistry lecture demonstration Schultz, C. W.
A simple yet dramatic lecture demonstration can help tie together concepts of oxygen chemistry, combustion, gas properties and rates of reactions.
Schultz, C. W. J. Chem. Educ. 1974, 51, 751.
Oxidation / Reduction |
Reactions |
Gases
|
Fluorimetric analysis of nitrate in real samples Miguel, Antonio H.; Braun, Robert D.
The fluorimetric analysis of "real" samples is often undesirable as a student experiment, since prior separations of elaborate sample preparations are required. It is the purpose of this paper to report a fluorimetric, student experiment for the determination of trace nitrate in river water and soil.
Miguel, Antonio H.; Braun, Robert D. J. Chem. Educ. 1974, 51, 682.
Agricultural Chemistry |
Spectroscopy
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The paramagnetism of O2 Lethbridge, J. W.; Davies, M. B.
A simple but more spectacular demonstration of the paramagnetism of O2.
Lethbridge, J. W.; Davies, M. B. J. Chem. Educ. 1973, 50, 656.
Magnetic Properties |
Molecular Properties / Structure
|
Sulfur compounds. Pollution, health effects, and biological function Leh, F.; Chan, K. M.
Reviews the role of sulfur and its compounds in pollution and adverse health effects as well as biological functions.
Leh, F.; Chan, K. M. J. Chem. Educ. 1973, 50, 246.
Nonmetals |
Proteins / Peptides
|
A simple demonstration of O2 paramagnetism. A macroscopically observable difference between VB and MO approaches to bonding theory Saban, G. H.; Moran, T. F.
A simple apparatus to demonstrate the paramagnetic behavior of oxygen.
Saban, G. H.; Moran, T. F. J. Chem. Educ. 1973, 50, 217.
Molecular Properties / Structure |
Magnetic Properties |
MO Theory |
Covalent Bonding
|
Dissolved oxygen determination Berger, Toby E.
Details regarding the cited procedure.
Berger, Toby E. J. Chem. Educ. 1973, 50, 160.
Water / Water Chemistry |
Solutions / Solvents
|
Notes on determination of dissolved oxygen Sommers, Raymond A.
Simplifications in the referenced procedure that make it more suitable for the introductory laboratory.
Sommers, Raymond A. J. Chem. Educ. 1973, 50, 160.
Water / Water Chemistry |
Solutions / Solvents
|
Nitrogen Fixation. An interdisciplinary frontier Schneller, Stewart W.
Examines biological nitrogen fixation, inorganic complexes related to N2ase, and non-enzymatic nitrogen fixation.
Schneller, Stewart W. J. Chem. Educ. 1972, 49, 786.
Plant Chemistry
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Dissolved oxygen. A relevant experiment for the introductory laboratory Stagg, William R.
Students measure the dissolved oxygen content of water from several natural sources as well as the change in solubility with temperature.
Stagg, William R. J. Chem. Educ. 1972, 49, 427.
Water / Water Chemistry |
Oxidation / Reduction |
Quantitative Analysis |
Solutions / Solvents |
Precipitation / Solubility |
Gases
|
Why is the oxygen in water negative? Liebman, Joel F.
Oxygen in water is negative because a negative charge, unlike a positive, can be stabilized using ground state ionic resonance structures.
Liebman, Joel F. J. Chem. Educ. 1972, 49, 415.
Water / Water Chemistry |
Molecular Properties / Structure |
Oxidation State
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Convenient, inexpensive unknowns for oxygen bomb calorimetry Shearer, Edmund C.
Ordinary aspirin tablets make excellent samples for oxygen bomb calorimetry.
Shearer, Edmund C. J. Chem. Educ. 1972, 49, 410.
Calorimetry / Thermochemistry
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Nitrate analysis. A laboratory experiment for the nonscience major course King, Donald M.; Lampman, Gary M.; Smith, John III
The authors have found the brucine method for the detection and estimation of nitrate in fresh water to work well as a laboratory experiment for their nonscience major general chemistry course.
King, Donald M.; Lampman, Gary M.; Smith, John III J. Chem. Educ. 1971, 48, 647.
Nonmajor Courses
|
Beginning chemistry can be relevant Corwin, James F.
The continuing criticism offered by students of the science that the present day courses are not relevant to contemporary problems. This can be answered in part by a laboratory program based on environmental problems.
Corwin, James F. J. Chem. Educ. 1971, 48, 522.
Acids / Bases |
Solutions / Solvents |
Student-Centered Learning
|
Hydrogen sulfide under any other name still smells. A poisonous story Brasted, Robert C.
The chemistry of hydrogen sulfide affords an excellent opportunity to integrate descriptive inorganic and coordination chemistry with biochemistry.
Brasted, Robert C. J. Chem. Educ. 1970, 47, 574.
Descriptive Chemistry |
Molecular Properties / Structure |
Coordination Compounds |
Enzymes |
Proteins / Peptides
|
Oxidizing action of sulfur dioxide Lauren, Paul M.
A burning ribbon of magnesium is dropped into a flask of sulfur dioxide produces elemental sulfur.
Lauren, Paul M. J. Chem. Educ. 1969, 46, A55.
Oxidation / Reduction |
Reactions
|
Group VI. The Sulfur Family D. Sulfur Dioxide Alyea, Hubert N.
Seven demonstrations involving sulfur dioxide.
Alyea, Hubert N. J. Chem. Educ. 1968, 45, A977.
Phases / Phase Transitions / Diagrams |
Reactions |
Precipitation / Solubility |
Oxidation / Reduction
|
Group VI. The Sulfur Family C. Sulfides Alyea, Hubert N.
Demonstrates the restoration of paintings blackened by PbS.
Alyea, Hubert N. J. Chem. Educ. 1968, 45, A977.
Applications of Chemistry
|
Reactions of metals and sulfur Walker, Noojin
An iron nail reacts with sulfur to produce iron(II) sulfide.
Walker, Noojin J. Chem. Educ. 1968, 45, A901.
Metals |
Reactions
|
Effect of shock on CS2 vapor Viswanathan, Arcot
An explosive shock separates CS2 into its constituent elements.
Viswanathan, Arcot J. Chem. Educ. 1968, 45, A901.
Gases |
Separation Science
|
Group VI. The sulfur family. A. Members: S, Se, Te. B. Elemental sulfur Alyea, Hubert N.; Rogers, Crosby U.
Sulfur from H2S + SO2, rhombic and prismatic sulfur.
Alyea, Hubert N.; Rogers, Crosby U. J. Chem. Educ. 1968, 45, A836.
Crystals / Crystallography
|
Nitrogen chemistry. E. Nitrites and nitrates Mancuso, Carl J.; Alyea, Hubert N.; Slabaugh, W. A.
Demonstrations include nitric acid + H2S, sodium nitrate + carbon, fire-writing with KNO3, nitrate ring test, nitrate versus nitrite, and micro-analysis for nitrogen compounds.
Mancuso, Carl J.; Alyea, Hubert N.; Slabaugh, W. A. J. Chem. Educ. 1968, 45, A607.
Qualitative Analysis |
Microscale Lab |
Oxidation / Reduction
|
Nitrogen chemistry. D. Oxides of nitrogen Alyea, Hubert N.
NO and NO2 from Cu + HNO3 and nitrogen dioxide.
Alyea, Hubert N. J. Chem. Educ. 1968, 45, A607.
|
Nitrogen chemistry. C. Fixation of nitrogen Mancuso, Carl J.
Demonstrations include air + Al-amalgam; the arc process for NO2; and the Ostwald process: NH3 + O2 and NO to HNO3.
Mancuso, Carl J. J. Chem. Educ. 1968, 45, A567.
Agricultural Chemistry |
Reactions
|
Nitrogen chemistry. A. Nitrogen. B. Ammonia Mancuso, Carl J.; Alyea, Hubert N.
Demonstration include an ammonia generator; ammonia diffusion throughout a rubber balloon; ammonium chloride smoke; and secret writing using HgNH2Cl + Hg.
Mancuso, Carl J.; Alyea, Hubert N. J. Chem. Educ. 1968, 45, A567.
Reactions
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Group zero. The atmosphere. B. Substances in the air Slabaugh, W. H.; Klug, Evangeline B.; Alyea, Hubert N.; Cooper, Edwin H.
Demonstrations include the analysis of air for oxygen content, paper burned in air, air + limewater, air + barium hydroxide, breathing into limewater, and the pH change from breath.
Slabaugh, W. H.; Klug, Evangeline B.; Alyea, Hubert N.; Cooper, Edwin H. J. Chem. Educ. 1967, 44, A599.
Atmospheric Chemistry |
Aqueous Solution Chemistry |
pH
|
Burning without access to air Alfthan, Voldemar
Permanganate in the presence of sulfuric acid furnishes the oxygen needed for rapid combustion.
Alfthan, Voldemar J. Chem. Educ. 1967, 44, A465.
Oxidation / Reduction |
Reactions
|
Group II. The Alkaline Earths. The Zinc Group D. Cadmium Young, James A.
Demonstration of the cadmium ion in the presence of sulfur.
Young, James A. J. Chem. Educ. 1967, 44, A1054.
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Group 1. The Alkali Metals B. The Alkali Metals. Ammonium ion Young, James A.
Demonstration of the formation of an ammonium amalgam.
Young, James A. J. Chem. Educ. 1967, 44, A1005.
Amines / Ammonium Compounds
|
The stoichiometry of sulfides: Experiments for the introductory laboratory Dingledy, David
Uses the preparation of lead sulfide and nickel sulfide to illustrate the law of constant proportions.
Dingledy, David J. Chem. Educ. 1967, 44, 693.
Stoichiometry |
Synthesis
|
Letter to the editor Bacon, E. K.
Examines values collected when using the production of copper sulfide to demonstrate the law of constant proportions.
Bacon, E. K. J. Chem. Educ. 1967, 44, 620.
Stoichiometry |
Synthesis
|
Carbon trioxide Krishnamurty, Kotra V.
Discusses the preparation and properties of CO3, carbon trioxide.
Krishnamurty, Kotra V. J. Chem. Educ. 1967, 44, 594.
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Analysis for nitrite by evolution of nitrogen: A general chemistry laboratory experiment Bartlett, J. Kenneth
This experiment involves analysis for the sodium nitrite content of a sodium nitrite-sodium chloride mixture by decomposition to nitrogen while heating in the presence of ammonium chloride solution.
Bartlett, J. Kenneth J. Chem. Educ. 1967, 44, 475.
Gases
|
The stoichiometry of copper sulfide formed in an introductory laboratory exercise Dingledy, David; Barnard, Walther M.
The preparation of copper sulfide is used as an introductory chemistry laboratory exercise to demonstrate the law of constant proportions.
Dingledy, David; Barnard, Walther M. J. Chem. Educ. 1967, 44, 242.
Stoichiometry |
Synthesis
|
Dreiding model of a reversible nitrogen atom Gootjes, J.; Bakuwel, G.
Presents a modification of a plastic Dreiding model that allows conformational changes to be represented.
Gootjes, J.; Bakuwel, G. J. Chem. Educ. 1965, 42, 407.
Molecular Modeling
|
The oxygen coordinations of lithium Donnay, Gabrielle; Gryder, J. W.
The prevalent notion that lithium has only one coordination number with oxygen calls for revision - both tetrahedral and octahedral coordinations do occur.
Donnay, Gabrielle; Gryder, J. W. J. Chem. Educ. 1965, 42, 223.
Coordination Compounds
|
Sulfuric acid and the hydrated hydronium ion Jurale, Bernard
Describes how the sulfuric acid-water system can be used to establish the identity of the hydronium and hydrated hydronium ions.
Jurale, Bernard J. Chem. Educ. 1964, 41, 573.
Acids / Bases |
Aqueous Solution Chemistry |
Phases / Phase Transitions / Diagrams
|
Demonstration notes: Oxygen in air Glanz, Joseph
Explains that the popular method of demonstrating the percentage volume of oxygen in air is fraut with errors.
Glanz, Joseph J. Chem. Educ. 1963, 40, A477.
Gases |
Atmospheric Chemistry
|
Demonstration notes: Monoclinic sulfur crystals Skyle, Sture
Suggests turpentine as a solvent for sulfur from which the sulfur may be recrystallized in the prismatic or monoclinic form.
Skyle, Sture J. Chem. Educ. 1963, 40, A477.
Crystals / Crystallography
|
Non-existent compounds Dasent, W. E.
The purpose of this review is to examine compounds that do not violate the rules of valence but which are nevertheless characterized by a high degree of instability, and to consider why these structures are unstable or non-existent.
Dasent, W. E. J. Chem. Educ. 1963, 40, 130.
Molecular Properties / Structure |
Covalent Bonding
|
The electronic structures and stereochemistry of NO2+, NO2, and NO2- Panckhurst, M. H.
A comparison of the electronic structures and stereochemistry of NO2+, NO2, and NO2-.
Panckhurst, M. H. J. Chem. Educ. 1962, 39, 270.
Stereochemistry |
Molecular Properties / Structure |
Resonance Theory
|
A reagent bottle for dispensing insoluble gases Bixby, Louis W.
This apparatus can be used to generate hydrogen and oxygen collected through water displacement.
Bixby, Louis W. J. Chem. Educ. 1960, 37, 430.
Laboratory Equipment / Apparatus |
Gases
|
Instability of sulfur-potassium chlorate mixture: A chemical view Tanner, Herbert G.
Provides two experiments intended to display the chemistry of and safety guidelines associated with the ignition of sulfur-potassium chlorate mixtures, regularly used as a fuel by model rocket enthusiasts.
Tanner, Herbert G. J. Chem. Educ. 1959, 36, 58.
Oxidation / Reduction
|
Explosive hazard of aluminum-liquid oxygen mixtures Austin, Calvin M.; Rohrer, Charles S.; Seifert, Ralph L.
Details the serious explosive hazards and ignition properties of aluminum-liquid oxygen mixtures; this demonstration should NEVER be used for classroom or public viewing purposes.
Austin, Calvin M.; Rohrer, Charles S.; Seifert, Ralph L. J. Chem. Educ. 1959, 36, 54.
Oxidation / Reduction
|
Reduction of oxides by hydrogen: A quantitative experiment for general chemistry laboratory Masterton, William L.; Demo, Joseph J., Jr.
Six oxides (CuO, NiO, CoO, SnO2, Co3O4, and Cu2O) have been found to give satisfactory results for reduction by hydrogen and determination of equivalent weights.
Masterton, William L.; Demo, Joseph J., Jr. J. Chem. Educ. 1958, 35, 242.
Oxidation / Reduction |
Quantitative Analysis
|
Letters to the editor Wolf, Milton G.
The author offers a means of determining the percentage composition of oxygen in air through burning phosphorus.
Wolf, Milton G. J. Chem. Educ. 1956, 33, 148.
Atmospheric Chemistry
|
Synthesis of copper(I) sulfide Scholes, Samuel R., Jr.
The formation of sulfur dioxide fumes during the synthesis of copper(I) sulfide can be avoided by a simple, small-scale procedure.
Scholes, Samuel R., Jr. J. Chem. Educ. 1955, 32, 365.
Synthesis
|
Letters to the editor Wolf, Milton G.
The author extends his earlier suggestions regarding the collection of chlorine to hydrogen sulfide.
Wolf, Milton G. J. Chem. Educ. 1954, 31, 387.
Aqueous Solution Chemistry |
Precipitation / Solubility |
Gases
|
The allotropy of sulfur: A demonstration Butler, S. B.
Demonstrates that the allotropic forms of sulfur have different physical properties.
Butler, S. B. J. Chem. Educ. 1954, 31, 187.
Physical Properties
|
Determination of the density of oxygen gas Fiekers, B. A.
The "Oxybomb," a small cartridge of compressed oxygen, is used for determining the density of oxygen gas in laboratory or lecture.
Fiekers, B. A. J. Chem. Educ. 1954, 31, 139.
Gases |
Physical Properties
|
Demonstration of ozone from bottled oxygen Ransford, J. E.
Describes a relatively simple method for generating ozone from oxygen using an induction coil.
Ransford, J. E. J. Chem. Educ. 1951, 28, 477.
|
Large crystals of monoclinic sulfur Wolf, Milton G.
Presents a procedure for producing large crystals of monoclinic sulfur through crystallization from olive oil.
Wolf, Milton G. J. Chem. Educ. 1951, 28, 427.
Crystals / Crystallography
|
A method of preparing oxygen Groves, F. T.
Describes the generation of oxygen from hydrogen peroxide.
Groves, F. T. J. Chem. Educ. 1951, 28, 331.
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