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Paideya, V.; Sookrajh, R. – South African Journal of Higher Education, 2010
Many under-prepared university students do not know how to study (Martin and Arendale 1993) because they have not yet developed the abstract reasoning skills that allow them to learn new ideas simply by reading a text or listening to a lecture. This article draws from selected findings from a PhD study currently being undertaken at a university in…
Descriptors: Video Technology, Stoichiometry, Intervention, Focus Groups
Forest, Kaya; Rayne, Sierra – Journal of Chemical Education, 2009
Studies on student learning during primary- and secondary-school course-related field trip activities have shown lasting cognitive and socio-cultural effects. However, fewer studies have investigated the potential benefits of incorporating field trip activities into post-secondary education. The curriculum in a first-year university chemistry…
Descriptors: Field Trips, Water Quality, Lifelong Learning, Organic Chemistry
Shultz, Mary Jane; Kelly, Matthew; Paritsky, Leonid; Wagner, Julia – Journal of Chemical Education, 2009
A theme-based course focusing on the potential role of hydrogen as a future fuel is described. Numerous topics included in typical introductory courses can be directly related to the issue of hydrogen energy. Beginning topics include Avogadro's number, the mole, atomic mass, gas laws, and the role of electrons in chemical transformations. Reaction…
Descriptors: Introductory Courses, Fuels, Thermodynamics, Chemistry
Michalowski, Tadeusz; Toporek, Marcin; Rymanowski, Maciej – Journal of Chemical Education, 2007
The pH-static titration is applicable to those systems where at least two types of reactions occur in comparable intensities. The commonalities in titrimetric procedure realized according to pH-static titration, irrespective of the kind of chemical processes occurring are discussed.
Descriptors: Chemistry, Measurement Techniques, Molecular Structure, Stoichiometry
Taasoobshirazi, Gita; Glynn, Shawn M. – Journal of Research in Science Teaching, 2009
A model of expertise in chemistry problem solving was tested on undergraduate science majors enrolled in a chemistry course. The model was based on Anderson's "Adaptive Control of Thought-Rational" (ACT-R) theory. The model shows how conceptualization, self-efficacy, and strategy interact and contribute to the successful solution of quantitative,…
Descriptors: Majors (Students), Self Efficacy, Chemistry, Problem Solving
Cacciatore, Kristen L.; Sevian, Hannah – Journal of Chemical Education, 2009
Many institutions are responding to current research about how students learn science by transforming their general chemistry laboratory curricula to be inquiry-oriented. We present a comparison study of student performance after completing either a traditional or an inquiry stoichiometry experiment. This single laboratory experience was the only…
Descriptors: Stoichiometry, Prior Learning, Chemistry, Instructional Effectiveness
Chandrasegaran, A. L.; Treagust, David F.; Waldrip, Bruce G.; Chandrasegaran, Antonia – Chemistry Education Research and Practice, 2009
A qualitative case study was conducted to investigate the understanding of the limiting reagent concept and the strategies used by five Year 11 students when solving four reaction stoichiometry problems. Students' written problem-solving strategies were studied using the think-aloud protocol during problem-solving, and retrospective verbalisations…
Descriptors: Stoichiometry, Protocol Analysis, Chemistry, Problem Solving
Klingshirn, Marc A.; Wyatt, Allison F.; Hanson, Robert M.; Spessard, Gary O. – Journal of Chemical Education, 2008
We are currently in the process of incorporating green chemistry throughout the chemistry curriculum. In this article we describe how we applied the principles of green chemistry in one of our first-semester general chemistry courses, specifically in relation to the determination of the formula of a hydrate. We utilize a copper hydrate salt that…
Descriptors: Chemistry, Science Instruction, Conservation (Environment), Science Experiments
Horta, Arturo; Pastoriza, M. Alejandra – Journal of Chemical Education, 2007
Various methods for the determination of the molecular weight distribution (MWD) of different polymer samples are presented. The study shows that the molecular weight averages and distribution of a polymerization completely depend on the characteristics of the reaction itself.
Descriptors: Plastics, Chemistry, Molecular Structure, Science Activities
Mills, Kenneth V.; Gullmette, Louise W. – Journal of Chemical Education, 2007
The article describes a new discovery experiment that uses thermodynamical analysis to study neutralization reactions based on neutralization of citric acid. The experiment would be able to reinforce students' understanding of stoichiometry and allow for the discovery of basic concepts of thermochemistry.
Descriptors: Stoichiometry, Chemistry, Thermodynamics, Science Experiments
Sevcik, Richard S.; Gamble, Rex; Martinez, Elizabet; Schultz, Linda D.; Alexander, Susan V. – Journal of Chemical Education, 2008
"Ionic Blocks" is a teaching tool designed to help middle school students visualize the concepts of ions, ionic compounds, and stoichiometry. It can also assist high school students in reviewing their subject mastery. Three dimensional blocks are used to represent cations and anions, with color indicating charge (positive or negative) and size…
Descriptors: Chemistry, Science Instruction, Teaching Methods, Secondary School Science
Dahsah, Chanyah; Coll, Richard K.; Sung-ong, Sunan; Yutakom, Naruemon; Sanguanruang, Sudjit – Journal of Science and Mathematics Education in Southeast Asia, 2008
The international literature suggests students frequently resort to the use of formulae when solving stoichiometry problems without understanding the concepts. In prior work we identified Thai student alternative conceptions and ability to solve numerical problem for stoichiometry. The results indicate that many Thai students also hold alternative…
Descriptors: Stoichiometry, Chemistry, Grade 10, Concept Formation
Jansoon, Ninna; Somsook, Ekasith; Coll, Richard K. – Journal of Science and Mathematics Education in Southeast Asia, 2008
The research reported in this study consisted of an investigation of student learning experiences in Thai chemistry laboratories using the Jigsaw IV method. A hands-on experiment based on the Jigsaw IV method using a real life example based on green tea beverage was designed to improve student affective variables for studying topics related to…
Descriptors: Student Attitudes, Cooperative Learning, Chemistry, Science Laboratories
Dahsah, Chanyah; Coll, Richard K. – Research in Science & Technological Education, 2007
Stoichiometry and related concepts are an important part of student learning in chemistry. In this interpretive-based inquiry, we investigated Thai Grade 10 and 11 students' conceptual understanding and ability to solve numerical problems for stoichiometry-related concepts. Ninety-seven participants completed a purpose-designed survey instrument…
Descriptors: Grade 10, Grade 11, Secondary School Science, Problem Solving
Croteau, Joshua; Fox, William P.; Varazo, Kristofoland – PRIMUS, 2007
In beginning chemistry classes, students are taught a variety of techniques for balancing chemical equations. The most common method is inspection. This paper addresses using a system of linear mathematical equations to solve for the stoichiometric coefficients. Many linear algebra books carry the standard balancing of chemical equations as an…
Descriptors: Equations (Mathematics), Algebra, Mathematics Instruction, Stoichiometry