Showing papers in "Journal of Chemical Education in 1987"
TL;DR: The hard / soft acids / bases principle has been justifiably criticized because of the lack of a precise definition of hardness and the inability to quantify this property; recent developments have overcome these objections.
Abstract: The hard / soft acids / bases principle has been justifiably criticized because of the lack of a precise definition of hardness and the inability to quantify this property; recent developments have overcome these objections, however.
1,153Â citations
466Â citations
TL;DR: This paper examined whether the widespread assumption that being able to solve problems is equivalent to understanding molecular concepts is justified, and found that it is not always the case, and that the assumption is not justified.
Abstract: Chemistry teachers have assumed implicitly that being able to solve problems is equivalent to understanding molecular concepts; this study examines whether this widespread assumption is justified.
402Â citations
TL;DR: In this article, a study was conducted to determine prospective elementary teachers' views of the particulate nature of matter and found that student misconceptions regarding the particulates nature of the matter were high.
Abstract: Student misconceptions regarding the particulate nature of matter, and a study to determine prospective elementary teachers' views of the particulate nature of matter.
322Â citations
TL;DR: In this paper, the authors describe how molecular structure can be represented mathematically and how this can lead to a better understanding of the connection between molecular structures and properties, which can be used to better understand the properties of molecular molecules.
Abstract: How molecular structure can be represented mathematically and how this can lead to a better understanding of the connection between molecular structures and properties.
129Â citations
TL;DR: In this paper, the authors propose strategies for the fostering of the question-asking capability of chemistry students through the use of active, real-world problem-solving and decision-making processes.
Abstract: Strategies for the fostering of the question-asking capability of chemistry students through the use of active, real-world problem-solving and decision-making processes.
105Â citations
100Â citations
TL;DR: In this paper, the atomic explanation of solid, liquid, and gaseous properties is begun without an appreciation of the notions that students already have about these subjects; description, investigation, results, and implications for teaching of adolescents' conception of gases.
Abstract: Too often, the atomic explanation of solid, liquid, and gaseous properties is begun without an appreciation of the notions that students already have about these subjects; description, investigation, results, and implications for teaching of adolescents' conception of gases
86Â citations
TL;DR: An English translation of a 1906 paper by Robert Luther on his discovery, investigation, and analysis of chemical waves is given in this article, where the authors present an analysis of the structure of the wave.
Abstract: An English translation of a 1906 paper by Robert Luther on his discovery, investigation, and analysis of chemical waves.
85Â citations
TL;DR: In this article, four aldehydes and four ketones can be used to synthesize sixteen different products via an aldol condensation reaction, including sixteen different types of products.
Abstract: Four aldehydes and four ketones can be used to synthesize sixteen different products via an aldol condensation reaction.
84Â citations
TL;DR: In this article, a more disciplined way of using substance names, as well as other strategies, was proposed to teach the chemical reaction concept to young students, and the results showed promising results.
Abstract: Teaching the chemical reaction concept to young students requires a more disciplined way of using substance names, as well as other strategies.
TL;DR: In this article, the difference between exercises and problems, the role of algorithms in working exercises, and the steps in problem solving are discussed, as well as a definition of an algorithm.
Abstract: Definition of an algorithm, the difference between exercises and problems, the role of algorithms in working exercises and problems, and the steps in problem solving.
TL;DR: In this paper, the authors present applications and failures of the reactivity selectivity principle, and rationalization of the principle failures, as well as quantitative and qualitative aspects of the selectivity selection principle.
Abstract: Applications and failures of the reactivity selectivity principle; quantitative aspects of the reactivity selectivity principle; and rationalization of reactivity selectivity principle failures.
TL;DR: In this article, a discussion of Luther's article on chemical waves, derivation of his equation for the speed of propagation of a chemical wave, Luther's experiments, and modern studies of chemical waves are discussed.
Abstract: Discussion of Luther's article on chemical waves, derivation of his equation for the speed of propagation of a chemical wave, Luther's experiments, and modern studies of chemical waves.
TL;DR: In this paper, the authors established a relation between M-space of students and M-demand of different items in general chemistry, and the objective of their study was to establish the relation between students and their demand for chemistry items.
Abstract: The objective of this study is to establish a relation between M-space of students and M-demand of different items in general chemistry
TL;DR: In this article, student preparation of YBa2Cu3O8-x, a demonstration of its superconductivity, and an analytical experiment dealing with the oxidation state of copper in the material.
Abstract: Student preparation of YBa2Cu3O8-x, a demonstration of its superconductivity, and an analytical experiment dealing with the oxidation state of copper in the material.
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TL;DR: In this paper, the importance of images to experienced chemists and the nature of images among learners was investigated. But the authors focused on correlations with the level of learning of the learner.
Abstract: Study to determine the importance of images to experienced chemists and the nature of images among learners, with particular attention to correlations with level of learning.
TL;DR: In this article, the authors describe the analysis of the bonding found in water and how it results in the observed geometry of the water molecule, and show that water molecules can be represented as a set of cylinders.
Abstract: Analysis of the bonding found in water and how it results in the observed geometry of the water molecule.
TL;DR: A thermal analysis experiment in which students must interpret results in order to draw appropriate conclusions is described in this paper, where students are asked to interpret the results of a thermal analysis task.
Abstract: A thermal analysis experiment in which students must interpret results in order to draw appropriate conclusions.
TL;DR: In this paper, a computer program that does Huckel MO calculations and allows the calculation of energy levels, MO coefficients, bond orders, and electron densities is presented, and another program that simulates ESR spectra on the computer.
Abstract: 83. Bits and pieces, 34. A computer program that does Huckel MO calculations and allows the calculation of energy levels, MO coefficients, bond orders, and electron densities; another the simulates ESR spectra on the computer.
TL;DR: Stability ruler comparisons illustrate how the variability in relative binding strengths of Zn(II), Cd(II, Pb(II) and Hg(III) depends on the ligand donor atoms as mentioned in this paper.
Abstract: Stability ruler comparisons illustrate how the variability in relative binding strengths of Zn(II), Cd(II), Pb(II), and Hg(II) depends on the ligand donor atoms.
TL;DR: As educators, we should not confuse the "normal hydrogen electrode" with the "standard hydrogen electrode". as mentioned in this paper, which is the opposite of the one we use in this paper.
Abstract: As educators, we should not confuse the "normal hydrogen electrode" with the "standard hydrogen electrode".
TL;DR: In this paper, the relative effectiveness of three instructional approaches on college chemistry laboratory achievement: the traditional approach, the learning cycle approach, and computer simulation was evaluated. But the results were limited.
Abstract: Study designed to determine the relative effectiveness of three different instructional approaches on college chemistry laboratory achievement: the "traditional" approach, the learning cycle approach, and computer simulation.
TL;DR: A brief explanation of the function of the vortex tube and some heating and cooling applications for the chemistry laboratory can be found in this article, with a brief discussion of some of the applications.
Abstract: A brief explanation of the function of the vortex tube and some heating and cooling applications for the chemistry laboratory.