| Journal Articles: 27 results |
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Teaching Avogadro's Hypothesis and Helping Students to See the World Differently Brett Criswell This article uses a model from educational psychologyChi's theory of ontological misclassificationto explain the source of students' difficulties in understanding Avogadro's hypothesis and provide a method to successfully teach this fundamental concept. Criswell, Brett. J. Chem. Educ. 2008, 85, 1372.
Atomic Properties / Structure |
Gases
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Mustard Gas: Its Pre-World War I History Ronald J. Duchovic and Joel A. Vilensky A review of the history of the synthesis of mustard gas by 19th century European chemists highlights the increasing sophistication of the chemical sciences during this time. Duchovic, Ronald J.; Vilensky, Joel A. J. Chem. Educ. 2007, 84, 944.
Applications of Chemistry |
Atomic Properties / Structure |
Toxicology
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Millikan: Good to the Last (Oil) Drop Earl F. Pearson In this analogy, drop-shaped pieces of magnet represent oil drops, steel BBs represent the electrons, and the mass of a BB represents the charge of an electron. The smallest possible difference in mass between any two samples of BBs should be the mass of a single BB. Pearson, Earl F. . J. Chem. Educ. 2006, 83, 1312A.
Atomic Properties / Structure
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E = mc2 for the Chemist: When Is Mass Conserved? Richard S. Treptow Einstein's famous equation is frequently misunderstood in textbooks and popular science literature. Its correct interpretation is that mass and energy are different measures of a single quantity known as massenergy, which is conserved in all processes. Treptow, Richard S. J. Chem. Educ. 2005, 82, 1636.
Atomic Properties / Structure |
Nuclear / Radiochemistry |
Theoretical Chemistry |
Thermodynamics
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Atomic and Molecular Structure in Chemical Education: A Critical Analysis from Various Perspectives of Science Education Georgios Tsaparlis The perspectives employed in this paper are (i) the Piagetian developmental perspective, (ii) the Ausbelian theory of meaningful learning, (iii) the information processing theory, and (iv) the alternative conceptions movement. The implications for teaching and curriculums are discussed. Tsaparlis, Georgios. J. Chem. Educ. 1997, 74, 922.
Learning Theories |
Atomic Properties / Structure |
Molecular Properties / Structure |
Constructivism
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A simple laboratory experiment illustrating the relative nature of atomic weights Huff, Randolph B.; Evans, David W. The concept of atomic weight scale remains a source of confusion for beginning chemistry students. This paper proposes a simple lab experience that could help students better understand this idea. Huff, Randolph B.; Evans, David W. J. Chem. Educ. 1991, 68, 675.
Atomic Properties / Structure |
Periodicity / Periodic Table
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Simulation of Rutherford's experiment Bishop, Carl B. Apparatus and procedure to simulate Rutherford's classic gold foil experiment. Bishop, Carl B. J. Chem. Educ. 1990, 67, 889.
Atomic Properties / Structure
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The use of a simple spectrometer/microcomputer arrangement for teaching atomic theory in general chemistry courses Casanova, J.; Arellano, M.; Lazo, L.; Gomez, H. Experiment involving the analysis of a discharge tube to introduce students to the hydrogen atom model. Casanova, J.; Arellano, M.; Lazo, L.; Gomez, H. J. Chem. Educ. 1989, 66, A201.
Atomic Spectroscopy |
Atomic Properties / Structure |
Laboratory Computing / Interfacing
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The discovery of the electron, proton, and neutron Peake, Barrie M. Brief history of the discovery of the electron, proton, and neutron. Peake, Barrie M. J. Chem. Educ. 1989, 66, 738.
Atomic Properties / Structure
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What is an element? Roundy, Willard H., Jr. Problems with using outdated definitions of what constitutes an element. Roundy, Willard H., Jr. J. Chem. Educ. 1989, 66, 729.
Isotopes |
Atomic Properties / Structure
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Chemistry according to ROF (Fee, Richard) Radcliffe, George; Mackenzie, Norma N. Two reviews on a software package that consists of 68 programs on 17 disks plus an administrative disk geared toward acquainting students with fundamental chemistry content. For instance, acids and bases, significant figures, electron configuration, chemical structures, bonding, phases, and more. Radcliffe, George; Mackenzie, Norma N. J. Chem. Educ. 1988, 65, A239.
Chemometrics |
Atomic Properties / Structure |
Equilibrium |
Periodicity / Periodic Table |
Periodicity / Periodic Table |
Stoichiometry |
Physical Properties |
Acids / Bases |
Covalent Bonding
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Pandemonium pesticide: A simple demonstration illustrating some fundamental chemical concepts Kauffman, George B.; Chooljian, Steven H.; Ebner, Ronald D. Demonstration that uses large, visible particles to simulate calculations of atomic / molecular mass, percentage composition, and molecular formula. Kauffman, George B.; Chooljian, Steven H.; Ebner, Ronald D. J. Chem. Educ. 1985, 62, 870.
Atomic Properties / Structure |
Molecular Properties / Structure |
Stoichiometry |
Chemometrics
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Updating the atomic theory in general chemistry Whitman, Mark Presents a descriptive overview of the recent achievements that have furthered the understanding of atomic structure to provide instructors with the background necessary to enhance their classroom presentations. Whitman, Mark J. Chem. Educ. 1984, 61, 952.
Atomic Properties / Structure
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Developing models: What is the atom really like? Records, Roger M. Using physical and computer models to illustrate historical changes in our view of the atom. Records, Roger M. J. Chem. Educ. 1982, 59, 307.
Atomic Properties / Structure |
Quantum Chemistry
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But if atoms are so tiny... Kolb, Doris Reviews the atomic theory, the laws of chemical combination, atomic weight scales, Avogadro's hypothesis, the development of the mass spectrograph, the meaning of atomic weight, and the difference between mass and weight in answering the question "If atoms are so small, how can we know how much they weigh?" [Debut] Kolb, Doris J. Chem. Educ. 1977, 54, 543.
Atomic Properties / Structure |
Kinetic-Molecular Theory |
Mass Spectrometry
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Chemical aspects of Bohr's 1913 theory Kragh, Helge The chemical content of Bohr's 1913 theory has generally been neglected in the treatises on the history of chemistry; this paper regards Bohr as a theoretical chemist and discusses the chemical aspects of his atomic theory. Kragh, Helge J. Chem. Educ. 1977, 54, 208.
Periodicity / Periodic Table |
Atomic Properties / Structure |
Molecular Properties / Structure |
Covalent Bonding |
Theoretical Chemistry
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The use of tables of data in teaching: The students discover laws about ionization potentials Haight, G. P., Jr. Students are asked to see what they can discover in a table of ionization potentials of the elements like that presented in most general chemistry textbooks. Haight, G. P., Jr. J. Chem. Educ. 1967, 44, 468.
Atomic Properties / Structure |
Periodicity / Periodic Table
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The structure of atoms (Lagowski, J. J.) Cohen, Irwin
Cohen, Irwin J. Chem. Educ. 1965, 42, 178.
Atomic Properties / Structure
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An atomic and molecular orbital models kit Stone, A. Harris; Siegelman, Irwin The models presented here allows one to see the overlap that constitutes covalent bonds. Stone, A. Harris; Siegelman, Irwin J. Chem. Educ. 1964, 41, 395.
Atomic Properties / Structure |
Molecular Modeling |
Molecular Properties / Structure |
Covalent Bonding
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A simple model of the d orbitals Douglas, Bodie E. Presents a simple model of the d orbitals constructed from plastic sponges. Douglas, Bodie E. J. Chem. Educ. 1964, 41, 40.
Atomic Properties / Structure
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Cloud chamber, molecular film, and atomic weight of silver Kokes, R. J.; Dorfman, M. K.; Mathia, T. Observing the traces of elementary particles in a cloud chamber, estimating the size of a molecule using a soap film, and quantitatively determining the atomic weight of silver. Kokes, R. J.; Dorfman, M. K.; Mathia, T. J. Chem. Educ. 1962, 39, 18.
Atomic Properties / Structure
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Philosophical antecedents of the modern atom Gorman, Mel The purpose of this paper is to present a brief survey of Greek atomism, its rise, recession, and revival. Gorman, Mel J. Chem. Educ. 1960, 37, 100.
Atomic Properties / Structure
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Atomic-weight variations in nature Boggs, James E. Atoms of the same element may have different masses (due to isotopic differences) depending on their source. Boggs, James E. J. Chem. Educ. 1955, 32, 400.
Atomic Properties / Structure |
Nuclear / Radiochemistry |
Isotopes
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BerzeliusPioneer atomic weight chemist MacNevin, William Marshall Examines the many methods employed by Berzelius in determining atomic weights. MacNevin, William Marshall J. Chem. Educ. 1954, 31, 207.
Atomic Properties / Structure
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An introduction to the electron theory of metals Lefever, Robert A. This discussion is intended to provide a general background for the understanding of metal physics as well as a basis for more advanced study. Lefever, Robert A. J. Chem. Educ. 1953, 30, 486.
Metals |
Atomic Properties / Structure
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Letters Nair, C. N. A mathematical derivation demonstrating that masses of different elements equal to their atomic weights must contain the same number of atoms. Nair, C. N. J. Chem. Educ. 1953, 30, 155.
Stoichiometry |
Atomic Properties / Structure
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Letters Azcuenaga-Chacon, J. V. The author suggests that valence electrons be called "valentrons." Azcuenaga-Chacon, J. V. J. Chem. Educ. 1953, 30, 155.
Atomic Properties / Structure |
Nomenclature / Units / Symbols
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