| Journal Articles: 34 results |
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The Penny Experiment Revisited: An Illustration of Significant Figures, Accuracy, Precision, and Data Analysis Joseph Bularzik
In this general chemistry laboratory the densities of pennies are measured by weighing them and using two different methods to measure their volumes. The average and standard deviation calculated for the resulting densities demonstrate that one measurement method is more accurate while the other is more precise.
Bularzik, Joseph. J. Chem. Educ. 2007, 84, 1456.
Chemometrics |
Nomenclature / Units / Symbols |
Nonmajor Courses |
Physical Properties
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Concentration Scales for Sugar Solutions David W. Ball
Examines several special scales used to indicate the concentration of sugar solutions and their application to industry.
Ball, David W. J. Chem. Educ. 2006, 83, 1489.
Nomenclature / Units / Symbols |
Food Science |
Solutions / Solvents
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SI for Chemists: Another Position Tomislav Cvitas
I must say that I agree neither with what was said in the original commentary by R. D. Freeman, nor with the letter by P. Karol.
Cvitas, Tomislav. J. Chem. Educ. 2004, 81, 801.
Nomenclature / Units / Symbols
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SI for Chemists: Persistent Problems, Solid Solutions. SI Basic Units: The Kilogram and the Mole Paul J. Karol
The persistent perceived problem with the base units kilogram and mole addressed in those journal articles is resolvable once it is finally recognized that we have been using a double standard: the international platinumĀiridium kilogram prototype and 12C.
Karol, Paul J. J. Chem. Educ. 2004, 81, 800.
Nomenclature / Units / Symbols |
Quantitative Analysis |
Stoichiometry
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Mole, Mole per Liter, and Molar: A Primer on SI and Related Units for Chemistry Students George Gorin
A brief historical overview of the SI system, the concept of the mole and the definition of mole unit, the status of the liter in the metric and SI systems, and the meaning of molar and molarity.
Gorin, George. J. Chem. Educ. 2003, 80, 103.
Stoichiometry |
Nomenclature / Units / Symbols |
Solutions / Solvents |
Enrichment / Review Materials
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Correctly Expressing Atomic Weights (re J. Chem. Educ. 2000, 77, 1438) Moreno Paolini, Giovanni Cercignani, and Carlo Bauer
Alternative units in which to express atomic weight.
Paolini, Moreno; Cercignani, Giovanni; Bauer, Carlo. J. Chem. Educ. 2002, 79, 163.
Nomenclature / Units / Symbols |
Learning Theories
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Correctly Expressing Atomic Weights (re J. Chem. Educ. 2000, 77, 1438) George Gorin
Alternative units in which to express atomic weight.
Gorin, George. J. Chem. Educ. 2002, 79, 163.
Nomenclature / Units / Symbols |
Learning Theories
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The Evolution of the Celsius and Kelvin Temperature Scales and the State of the Art Julio Pellicer, M. Amparo Gilabert, and Ernesto Lopez-Baeza
A physical analysis is given of the evolution undergone by the Celsius and Kelvin temperature scales, from their definition to the present day.
Pellicer, Julio; Gilabert, M. Amparo; Lopez-Baeza, Ernesto. J. Chem. Educ. 1999, 76, 911.
Nomenclature / Units / Symbols |
Thermodynamics |
Learning Theories
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Temperature Scale Conversion as a Linear Equation: True Unit Conversion vs Zero-Offset Correction Reuben Rudman
The equation used for the interconversion between the Fahrenheit and Celsius temperature scales is in reality the general case of the straight-line equation (y = ax + b). This equation is the paradigm for many of the calculations taught in introductory chemistry.
Rudman, Reuben. J. Chem. Educ. 1998, 75, 1646.
Nomenclature / Units / Symbols |
Chemometrics
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Measuring with a Purpose: Involving Students in the Learning Process Metz, Patricia A.; Pribyl, Jeffrey R.
Constructivist learning activities for helping students to understand measurement, significant figures, uncertainty, scientific notation, and unit conversions.
Metz, Patricia A.; Pribyl, Jeffrey R. J. Chem. Educ. 1995, 72, 130.
Nomenclature / Units / Symbols |
Chemometrics |
Constructivism
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Mole and Chemical Amount: A Discussion of the Fundamental Measurements of Chemistry Gorin, George
Demonstrates that the mole is little different from other units of measurement.
Gorin, George J. Chem. Educ. 1994, 71, 114.
Nomenclature / Units / Symbols
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Imprecise numbers and incautious safety procedure mar experiment. Nelson, Robert N.
Problems with significant figures and safety concerns regarding two published experiments.
Nelson, Robert N. J. Chem. Educ. 1992, 69, 688.
Reactions |
Nomenclature / Units / Symbols
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Significant figures: A classroom demonstration Kirksey, H. Graden.
Demonstration to show students the function and importance of significant figures in a measurement.
Kirksey, H. Graden. J. Chem. Educ. 1992, 69, 497.
Nomenclature / Units / Symbols
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Views of nursing professionals on chemistry course content for nursing education Walhout, Justine S.; Heinschel, Judie.
Analysis of survey conducted of deans of schools of nursing, chairs of nursing departments, and registered nurses regarding courses required of nursing students and the importance of different units of measure and 39 chemistry topics to the nursing profession.
Walhout, Justine S.; Heinschel, Judie. J. Chem. Educ. 1992, 69, 483.
Medicinal Chemistry |
Nomenclature / Units / Symbols
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Chemical Nomenclature and Balancing Equations (Bergwall Educational Software) Kling, Timothy A.
These computer programs deal exclusively with the subjects of inorganic nomenclature and balancing simple equations.
Kling, Timothy A. J. Chem. Educ. 1989, 66, A41.
Nomenclature / Units / Symbols
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Mathematics in the chemistry classroom. Part 1. The special nature of quantity equations Dierks, Werner; Weninger, Johann; Herron, J. Dudley
Differences between operation on quantities and operation on numbers and how chemical quantities should be described mathematically.
Dierks, Werner; Weninger, Johann; Herron, J. Dudley J. Chem. Educ. 1985, 62, 839.
Chemometrics |
Stoichiometry |
Nomenclature / Units / Symbols
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The definition and symbols for the quantity called "molarity" or "concentration" and for the SI units of this quantity Gorin, George
An alternative formulation for concentration and the SI units for this quantity.
Gorin, George J. Chem. Educ. 1985, 62, 741.
Nomenclature / Units / Symbols |
Solutions / Solvents
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Conversion of standard thermodynamic data to the new standard state pressure Freeman, Robert D.
Analyzes the changes that will be required to convert standard thermodynamic data from units of atmospheres to the bar.
Freeman, Robert D. J. Chem. Educ. 1985, 62, 681.
Thermodynamics |
Nomenclature / Units / Symbols
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Nuclear synthesis and identification of new elements Seaborg, Glenn T.
Review of descriptive terms, nuclear reactions, radioactive decay modes, and experimental methods in nuclear chemistry.
Seaborg, Glenn T. J. Chem. Educ. 1985, 62, 392.
Nuclear / Radiochemistry |
Nomenclature / Units / Symbols |
Isotopes
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The unit gram/mole and its use in the description of molar mass Gorin, G.
How is molar mass related to the quantity called "molecular (or atomic) weight"?
Gorin, G. J. Chem. Educ. 1984, 61, 1045.
Nomenclature / Units / Symbols |
Stoichiometry
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Natural sources of ionizing radiation Bodner, George M.; Rhea, Tony A.
Units of radiation measurement, calculations of radiation dose equivalent, sources of ionizing radiation and its biological effects.
Bodner, George M.; Rhea, Tony A. J. Chem. Educ. 1984, 61, 687.
Natural Products |
Nuclear / Radiochemistry |
Nomenclature / Units / Symbols
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The underprepared student, scientific literacy and Piaget: Reflections on the role of measurement in scientific discussion Kurland, Daniel J.
The need for an explicit instructional component that stresses the notion of measurement as a means of physical description.
Kurland, Daniel J. J. Chem. Educ. 1982, 59, 574.
Learning Theories |
Nomenclature / Units / Symbols
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Introduction to chemical nomenclature Friedstein, Harriet
Friedstein, Harriet J. Chem. Educ. 1981, 58, 414.
Nomenclature / Units / Symbols
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Adopting SI units in introductory chemistry Davies, William G.; Moore, John W.
Conventions associated with SI units, conversion relationships commonly used in chemistry, and a roadmap method for solving stoichiometry problems.
Davies, William G.; Moore, John W. J. Chem. Educ. 1980, 57, 303.
Nomenclature / Units / Symbols |
Chemometrics
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On finding a middle ground for SI Nelson, Robert A.
Comments on an earlier article regarding SI units.
Nelson, Robert A. J. Chem. Educ. 1979, 56, 661.
Nomenclature / Units / Symbols
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The ambit of chemistry Vitz, Edward W.
Proposal to revise the standard definition of chemistry to one that focusses on atoms and molecules rather than simply matter.
Vitz, Edward W. J. Chem. Educ. 1979, 56, 327.
Nomenclature / Units / Symbols
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Electron affinity. The zeroth ionization potential Brooks, David W.; Meyers, Edward A.; Sicilio, Fred; Nearing, James C.
It is the purpose of this article to present the merits of adopting the terminology zeroth ionization potential to describe the energy change that occurs when a gaseous anion loses an electron.
Brooks, David W.; Meyers, Edward A.; Sicilio, Fred; Nearing, James C. J. Chem. Educ. 1973, 50, 487.
Atomic Properties / Structure |
Nomenclature / Units / Symbols
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Significant digits in logarithm-antilogarithm interconversions Jones, Donald E.
Most textbooks are in error in the proper use of significant digits when interconverting logarithms and antilogarithms.
Jones, Donald E. J. Chem. Educ. 1972, 49, 753.
Nomenclature / Units / Symbols |
Chemometrics
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Mole fraction versus molality Creak, G. Alan
Mole fractions are not always unambiguous when used in the context of ionic solutions.
Creak, G. Alan J. Chem. Educ. 1968, 45, 622.
Nomenclature / Units / Symbols |
Aqueous Solution Chemistry |
Solutions / Solvents
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The significance of significant figures Pinkerton, Richard C.; Gleit, Chester E.
This paper is an attempt to clarify some of our ideas about numerical data, measurements, mathematical operations, and significant figures.
Pinkerton, Richard C.; Gleit, Chester E. J. Chem. Educ. 1967, 44, 232.
Nomenclature / Units / Symbols |
Chemometrics
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Letters Goldberg, David E.
The author suggests using the term "continuous chain" rather than "straight" chain so as to reduce confusion regarding the geometry of carbon chains.
Goldberg, David E. J. Chem. Educ. 1962, 39, 319.
Molecular Properties / Structure |
Nomenclature / Units / Symbols
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The carbon-12 scale of atomic masses Labbauf, Abbas
Examines the concept of atomic weight and the rise and coexistence of the oxygen and carbon scales of atomic mass.
Labbauf, Abbas J. Chem. Educ. 1962, 39, 282.
Nomenclature / Units / Symbols |
Physical Properties
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The mole and related quantities Guggenheim, E. A.
Examines some of the terminology associated with the mole and expressing amounts of substances.
Guggenheim, E. A. J. Chem. Educ. 1961, 38, 86.
Stoichiometry |
Nomenclature / Units / Symbols
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Recent developments concerning the signs of electrode potentials Licht, Truman S.; deBethune, Andre J.
It is the purpose of this paper to review recent developments concerning the signs of electrode potentials, particularly with respect to single electrode potential, half-reaction potential, and half-cell electromotive force.
Licht, Truman S.; deBethune, Andre J. J. Chem. Educ. 1957, 34, 433.
Electrochemistry |
Nomenclature / Units / Symbols |
Electrolytic / Galvanic Cells / Potentials
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