TIGER

Journal Articles: 38 results
Magnetized Water: Science or Fraud?  L. Lahuerta Zamora, G. M. Antón-Fos, P. A. Alemán López, and R. V. Martin Algarra
Commercial water magnetizers provide a unique opportunity to help university and secondary students develop appropriate skepticism against extraordinary claims and use testing as the basis for their scientific evaluation.
Lahuerta Zamora, L.; Antón-Fos, G. M.; Alemán López, P. A.; Martin Algarra, R. V. J. Chem. Educ. 2008, 85, 1416.
Aqueous Solution Chemistry |
Magnetic Properties |
pH |
Titration / Volumetric Analysis |
Water / Water Chemistry
The Role of Water Chemistry in Marine Aquarium Design: A Model System for a General Chemistry Class  Jeffrey J. Keaffaber, Ramiro Palma, and Kathryn R. Williams
Water chemistry is central to aquarium design, and it provides many potential applications for discussion in undergraduate chemistry and engineering courses. This article uses a hypothetical tank to house ocean sunfish as a model to show students the calculations and other considerations that are needed when designing a marine aquarium.
Keaffaber, Jeffrey J.; Palma, Ramiro; Williams, Kathryn R. J. Chem. Educ. 2008, 85, 225.
Acids / Bases |
Aqueous Solution Chemistry |
Consumer Chemistry |
Oxidation / Reduction |
Stoichiometry |
Water / Water Chemistry
A Simplified Model To Predict the Effect of Increasing Atmospheric CO2 on Carbonate Chemistry in the Ocean  Brian J. Bozlee, Maria Janebo, and Ginger Jahn
The chemistry of dissolved inorganic carbon in seawater is reviewed and used to predict the potential effect of rising levels of carbon dioxide in the atmosphere. It is found that calcium carbonate may become unsaturated in cold surface seawater by the year 2100, resulting in the destruction of calcifying organisms such as coral.
Bozlee, Brian J.; Janebo, Maria; Jahn, Ginger. J. Chem. Educ. 2008, 85, 213.
Applications of Chemistry |
Aqueous Solution Chemistry |
Atmospheric Chemistry |
Equilibrium |
Green Chemistry |
Water / Water Chemistry
Teaching Chemistry Laboratory Skills in Industrial Contexts  Julianne M. Braun and Carol White
A recently completed project has produced a compilation of 40 laboratory experiments presented within the contexts of five major industries. This article provides a summary of these experiments, along with a discussion of ancillary materials.
Braun, Julianne M.; White, Carol. J. Chem. Educ. 2006, 83, 353.
Applications of Chemistry |
Industrial Chemistry |
Metals |
Polymerization |
Water / Water Chemistry
Hard Water and Soft Soap: Dependence of Soap Performance on Water Hardness. A Classroom Demonstration  Viktoria K. L. Osorio, Wanda de Oliveira, and Omar A. El Seoud
We describe a series of classroom demonstrations presented to high school students. The demonstrations were carried out to answer the question: Why does soap not foam in seawater? We generalized the question into: Why does soap performance depend on the hardness of the water used? A sequence of experiments was carried out to compare the performance of soap in soft and hard water and to illustrate the water-softening action of EDTA and zeolites.
Osorio, Viktoria K. L.; de Oliveira, Wanda; El Seoud, Omar A. J. Chem. Educ. 2005, 82, 257.
Water / Water Chemistry |
Consumer Chemistry
The Effect of Ionic Strength on the Solubility of an Electrolyte  Joan D. Willey
The theory of activity versus concentration is important in industrial, environmental, and biochemistry. The increase in solubility of an electrolyte in a solution of a second electrolyte with no common ions compared with pure water is not an easy concept to grasp because it seems to be counterintuitive. The simple experiment described here illustrates this principle visually and dramatically. Students attempt to dissolve CaSO42H2O (gypsum) in pure water and in 0.25 M NaCl.
Willey, Joan D. J. Chem. Educ. 2004, 81, 1644.
Aqueous Solution Chemistry |
Quantitative Analysis |
Water / Water Chemistry |
Solutions / Solvents
Well Wishes. A Case on Septic Systems and Well Water Requiring In-Depth Analysis and Including Optional Laboratory Experiments  Mary M. Walczak and Juliette M. Lantz
This paper describes the use of a case study to teach introductory chemistry students the chemical principles of solution concentration (especially ppm) and dilution, aqueous redox reactions, and stoichiometric conversions between different solution species.
Walczak, Mary M.; Lantz, Juliette M. J. Chem. Educ. 2004, 81, 218.
Consumer Chemistry |
Water / Water Chemistry |
Solutions / Solvents |
Oxidation / Reduction |
Stoichiometry
Use of Chloroisocyanuarates for Disinfection of Water: Application of Miscellaneous General Chemistry Topics  Gabriel Pinto and Brian Rohrig
Using the chlorination of water (using sodium dichloroisocyanurate and trichloroisocyanuric acid) to develop general chemistry concepts; includes question for students and answers.
Pinto, Gabriel; Rohrig, Brian. J. Chem. Educ. 2003, 80, 41.
Stoichiometry |
Water / Water Chemistry |
Applications of Chemistry |
Photochemistry
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
A Microscale Spectrophotometric Determination of Water Hardness  James S. Gordon
Measuring water hardness using EDTA as a titrant, calmagite as an indicator, a colorimeter, and a graphing calculator.
Gordon, James S. J. Chem. Educ. 2001, 78, 1089.
UV-Vis Spectroscopy |
Water / Water Chemistry |
Titration / Volumetric Analysis
Remediation of Water Contaminated with an Azo Dye: An Undergraduate Laboratory Experiment Utilizing an Inexpensive Photocatalytic Reactor  John A. Bumpus, Jennifer Tricker, Ken Andrzejewski, Heather Rhoads, and Matthew Tatarko
The construction and use of an inexpensive photocatalytic reactor that utilizes titanium dioxide as the photocatalyst for wastewater treatment is described. In these experiments and in supplementary material, students are made aware that a variety of techniques have been developed to treat wastewaters, including those generated by the chemical industry. Water contaminated with the azo dye Congo Red was selected as an example of how one might treat contaminated water from a textile manufacturing facility.
Bumpus, John A.; Tricker, Jennifer; Andrzejewski, Ken; Rhoads, Heather; Tatarko, Matthew. J. Chem. Educ. 1999, 76, 1680.
Photochemistry |
Dyes / Pigments |
Laboratory Equipment / Apparatus |
Applications of Chemistry |
Water / Water Chemistry
The Softening of Hard Water and Complexometric Titrations: An Undergraduate Experiment  Helena Ceretti, Enrique A. Hughes, and Anita Zalts
An experiment in which (i) water hardness is explained and demonstrated; (ii) ion-exchange resin properties are visually demonstrated and then used for softening water; (iii) complexometric titrations are used for evaluating water hardness before and after softening; and (iv) acid-base titration can be used to show that the Ca/Mg ions removed by the ion exchanger are replaced by H ions.
Ceretti, Helena; Hughes, Enrique A.; Zalts, Anita. J. Chem. Educ. 1999, 76, 1420.
Ion Exchange |
Quantitative Analysis |
Titration / Volumetric Analysis |
Water / Water Chemistry |
Acids / Bases
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
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
A New Low-Cost Apparatus for Electrolysis of Water   Chieko Suzuki
Low-cost alternative to the Hofmann apparatus for the electrolysis of water.
Suzuki, Chieko. J. Chem. Educ. 1995, 72, 912.
Electrochemistry |
Water / Water Chemistry |
Laboratory Equipment / Apparatus
An Environmental Chemistry Curriculum Using Case Studies  Cheng, Vincent K. W.
Using case studies to make environmental chemistry more interesting and relevant for students.
Cheng, Vincent K. W. J. Chem. Educ. 1995, 72, 525.
Water / Water Chemistry |
Industrial Chemistry
An Environmental Distillation Experiment for Nonscience Majors  Soriano, David S.; Draeger, Jon A.
Comparison of total dissolved solids for several samples of water before and after a single, simple distillation.
Soriano, David S.; Draeger, Jon A. J. Chem. Educ. 1995, 72, 84.
Separation Science |
Water / Water Chemistry
A small-scale, easy-to-run wastewater-treatment plant: The treatment of an industrial water that contains suspended clays and soluble salts   Alvaro, Mercedes; Espla, Mercedes; Llinares, Jesus; Martinez-Manez, Ramon; Soto, Juan
Chemistry students are often interested in the chemical principles involved in industrial processes, the pollutants and waste products are generated, and their removal. This experiment introduces students to several theoretical concepts as they apply to real physical and chemical waste-treatment processes.
Alvaro, Mercedes; Espla, Mercedes; Llinares, Jesus; Martinez-Manez, Ramon; Soto, Juan J. Chem. Educ. 1993, 70, A129.
Water / Water Chemistry |
Green Chemistry |
Industrial Chemistry |
Colloids |
Separation Science
A water treatment experiment (chemical hardness) for nonscience majors  Soriano, David S.; Draeger, Jon A.
Description of an activity used in a nonmajors course called 'Chemistry and Society'.
Soriano, David S.; Draeger, Jon A. J. Chem. Educ. 1993, 70, 414.
Water / Water Chemistry |
Nonmajor Courses |
Instrumental Methods
Introducing the treatment of waste and wastewater in the general chemistry course: Applying physical and chemical principles to the problems of waste management  Dhawale, S. W.
Students learn simple lab techniques so that they can discuss applications such as cleanup of small-scale oil spills and the processes used to obtain drinkable pure water.
Dhawale, S. W. J. Chem. Educ. 1993, 70, 395.
Water / Water Chemistry |
Green Chemistry |
Applications of Chemistry
Simple soda bottle solubility and equilibria  Snyder, Cheryl A.; Snyder, Dudley C.
Using a bottle of selzter water and bromocresol green to demonstrate gas-liquid solubility (carbon dioxide in water).
Snyder, Cheryl A.; Snyder, Dudley C. J. Chem. Educ. 1992, 69, 573.
Solutions / Solvents |
Precipitation / Solubility |
Equilibrium |
Gases |
Liquids |
Aqueous Solution Chemistry |
Water / Water Chemistry
Magic sand: Modeling the hydrophobic effect and reversed-phase liquid chromatography  Vitz, Ed
The procedures described here are meant to reveal the important "nonsolvent" properties of water through its interaction with Magic Sand, and other synthetic silica derivatives.
Vitz, Ed J. Chem. Educ. 1990, 67, 512.
Chromatography |
Water / Water Chemistry
The water softener - A relevant, unifying example of many common chemical principles and calculations  Fulkrod, John E.
Determining the amount of sodium chloride needed for a water softener to replace all the hard water ions in a month's water supply for a typical household.
Fulkrod, John E. J. Chem. Educ. 1985, 62, 529.
Applications of Chemistry |
Water / Water Chemistry |
Aqueous Solution Chemistry
Scientific exploration with a microcomputer: Simulations for nonscientists  Whisnant, David M.
52. A four week-long exercise aimed at involving students with the scientific method through the use of a computer-simulated lake study.
Whisnant, David M. J. Chem. Educ. 1984, 61, 627.
Nonmajor Courses |
Water / Water Chemistry |
Applications of Chemistry
The chemical oceanographer   Abel, Robert B.
Oceanography holds fascinating subject matter for students learning chemistry.
Abel, Robert B. J. Chem. Educ. 1983, 60, 221.
Water / Water Chemistry |
Food Science |
Geochemistry |
Atmospheric Chemistry |
Drugs / Pharmaceuticals |
Applications of Chemistry
Chlorine in your water  Smith, J. G.
The use, chemistry, and alternatives to chlorine and chlorine compounds in water supplies.
Smith, J. G. J. Chem. Educ. 1975, 52, 656.
Water / Water Chemistry |
Consumer Chemistry
A study of water pollution. An undergraduate chemistry laboratory experience  Sarkis, Vahak D.
In addition to its environmental relevance, a water pollution study of the inorganic constituents in water as outlined in this article, provides the student with certain important principles of chemistry namely, colorimetric and titrimetric procedures.
Sarkis, Vahak D. J. Chem. Educ. 1974, 51, 745.
Applications of Chemistry |
Metals |
Green Chemistry |
Water / Water Chemistry |
Titration / Volumetric Analysis
Nitric acid in rain water  Gleason, Geoffrey I.
This trace analysis experiment is based on the conversion of nitrate to nitrite using a cadmium amalgam reductor column.
Gleason, Geoffrey I. J. Chem. Educ. 1973, 50, 718.
Acids / Bases |
Water / Water Chemistry |
Atmospheric Chemistry
The determination of dissolved oxygen by the Winkler method. A student laboratory experiment  McCormick, Patrick G.
This method is based on the reaction between oxygen and a suspension of manganese(II) hydroxide in a strongly alkaline solution.
McCormick, Patrick G. J. Chem. Educ. 1972, 49, 839.
Water / Water Chemistry |
Aqueous Solution Chemistry |
Gases |
Quantitative Analysis |
Titration / Volumetric Analysis
Efficient use of washing solvents. A quantitative treatment  Boschmann, Edwin
A quantitative study of the efficient use of washing solvents (e.g. distilled water) in the laboratory.
Boschmann, Edwin J. Chem. Educ. 1972, 49, 650.
Laboratory Management |
Water / Water Chemistry
Chemistry laboratories and other ecosystems  Wynn, Charles M.
Suggestions for reducing water pollution from the chemistry laboratory.
Wynn, Charles M. J. Chem. Educ. 1972, 49, 225.
Laboratory Management |
Water / Water Chemistry
The effervescence of ocean surf  Plumb, Robert C.; Blanchard, Duncan C.; Bilofsky, Howard S.; Bridgman, Wilbur B.
A pure liquid will not foam, but all true solutions will, as dictated by the fundamental concepts of surface thermodynamics enunciated by Gibbs.
Plumb, Robert C.; Blanchard, Duncan C.; Bilofsky, Howard S.; Bridgman, Wilbur B. J. Chem. Educ. 1972, 49, 29.
Water / Water Chemistry |
Aqueous Solution Chemistry |
Gases |
Solutions / Solvents |
Thermodynamics
An introductory experiment on phosphates in detergents  Mohrig, Jerry R.
Examines the phosphate controversy, the roles of phosphates in detergents, the chemistry of phosphates and their colorimetric determination, and presents an experiment in which the amount of phosphate is measured using two different analytical methods.
Mohrig, Jerry R. J. Chem. Educ. 1972, 49, 15.
Aqueous Solution Chemistry |
Water / Water Chemistry |
Consumer Chemistry |
Quantitative Analysis |
Applications of Chemistry
Calcium carbonate equilibria in lakes  Morton, Stephen D.; Lee, G. Fred
Discusses some of the problems encountered in studying the chemistry of lakes and oceans, focussing on the solubility of calcium carbonate in fresh water lakes.
Morton, Stephen D.; Lee, G. Fred J. Chem. Educ. 1968, 45, 511.
Aqueous Solution Chemistry |
Water / Water Chemistry |
Precipitation / Solubility |
Equilibrium
The hydrated hydronium ion  Clever, H. Lawrence
It is the purpose of this brief review to cite and discuss some of the evidence for the existence of the trihydrated hydronium ion.
Clever, H. Lawrence J. Chem. Educ. 1963, 40, 637.
Water / Water Chemistry |
Aqueous Solution Chemistry |
Acids / Bases |
Brønsted-Lowry Acids / Bases
The science study series. Volumes 12 and 18  Kieffer, William F.

Kieffer, William F. J. Chem. Educ. 1961, 38, 588.
Atomic Properties / Structure |
Nuclear / Radiochemistry |
Water / Water Chemistry
Ultra Low Conductivity Water  National Bureau of Standards Summary Technical Report
Describes the production of water with a conductivity approaching the lower theoretical limit.
National Bureau of Standards Summary Technical Report J. Chem. Educ. 1961, 38, 421.
Water / Water Chemistry |
Conductivity |
Aqueous Solution Chemistry
Water, a basic natural resource  Keirstead, Ralph E.
Describes the many uses for water and its importance as a basic natural resource.
Keirstead, Ralph E. J. Chem. Educ. 1955, 32, 99.
Water / Water Chemistry