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Pablo Serna-Gallén; Maria Fortuño-Morte; Héctor Beltrán-Mir; Eloísa Cordoncillo – Journal of Chemical Education, 2022
This article presents and discusses the results of an educational innovation that seeks to introduce the world of molecular gastronomy in chemistry lessons as a means to review stoichiometry and offer an alternative way to learn. In the literature to date, there is no evidence of haute cuisine having been employed to contextualize stoichiometry…
Descriptors: Chemistry, Science Instruction, Teaching Methods, Game Based Learning
Li, Manyu; Wang, Yu; Stone, Heather N.; Turki, Nadia – Education Sciences, 2021
The purpose of this randomized experimental study is to apply two socio-cognitive models to understand possible ways to improve students' learning outcomes in an online introductory chemistry learning environment. Specifically, the social presence theory suggested that students' sense of relatedness and learning motivation can be increased by a…
Descriptors: Introductory Courses, Chemistry, Science Instruction, Online Courses
Ralph, Vanessa Rosa; States, Nicole E.; Corrales, Adriana; Nguyen, Yvonne; Atkinson, Molly B. – Chemistry Education Research and Practice, 2022
Emphasizing stoichiometry appears to be a norm of introductory chemistry courses. In this longitudinal and mixed-methods study, we examined how the emphasis on stoichiometry in assessments of introductory chemistry impacted educational equity and student learning. Using quantitative methods, we identified mole and stoichiometric conversions as two…
Descriptors: Chemistry, Science Instruction, Equal Education, Introductory Courses
Kotoka, Love; Kriek, Jeanne – Journal of Baltic Science Education, 2022
Learners underperform in stoichiometry as they lack conceptual reasoning of the underlying concepts and the ability to solve stoichiometric problems. Therefore, it was necessary to determine if there is a statistical correlation between problem-solving skills and conceptual reasoning in stoichiometry and if so, whether one can significantly…
Descriptors: Prediction, Correlation, Science Instruction, Chemistry
Page, Michael F. Z.; Escott, Patrick; Silva, Maritza; Barding, Gregory A., Jr. – Chemistry Education Research and Practice, 2018
This case study demonstrates the ability of high school chemistry students, with varying levels of math preparation, to experience learning-gains on state and district assessments as it relates to chemical reactions, thermodynamics, and kinetics. These advances were predicated on the use of a teaching style rooted in abstract reasoning. The…
Descriptors: High School Students, Chemistry, Case Studies, Thermodynamics
Mamombe, Charles; Mathabathe, Kgadi C.; Gaigher, Estelle – EURASIA Journal of Mathematics, Science and Technology Education, 2021
This study explored the perceptions of teachers and learners regarding the use of Process Oriented Guided Learning Inquiry Learning (POGIL) to teach stoichiometry. A qualitative case study was carried out at two conveniently and purposively sampled township schools in Pretoria, South Africa. For this purpose, two Grade 11 physical sciences classes…
Descriptors: Teacher Attitudes, Student Attitudes, Stoichiometry, Chemistry
de Morais, Camilo de L. M.; Silva, Se´rgio R. B.; Vieira, Davi S.; Lima, Ka´ssio M. G. – Journal of Chemical Education, 2016
The binding constant and stoichiometry ratio for the formation of iron(II)-(1,10-phenanthroline) or iron(II)-o-phenanthroline complexes has been determined by a combination of a low-cost analytical method using a smartphone and a molecular modeling method as a laboratory experiment designed for analytical and physical chemistry courses. Intensity…
Descriptors: Stoichiometry, Chemistry, Laboratory Experiments, Integrated Activities
Levine, Lauren A.; Junker, Matthew; Stark, Myranda; Greenleaf, Dustin – Journal of Chemical Education, 2015
A simple and economical experimental setup is described that enables multiple individuals or groups within a laboratory class to measure the thermal melting of double stranded DNA simultaneously. The setup utilizes a basic spectrophotometer capable of measuring absorbance at 260 nm, UV plastic cuvettes, and a stirring hot plate. Students measure…
Descriptors: Laboratory Experiments, Science Activities, Genetics, Large Group Instruction
King-Dow Su – Journal of Baltic Science Education, 2017
This research focuses on students' tactic assessments of 3 correlations with illustrated 2-step strategic map and animated presentations in stoichiometry. The participants were divided into 2 learning groups: the experimental and the control group by quasi-experimental approach. Most of all, experimental group participants have been contingent on…
Descriptors: Correlation, Problem Solving, Comparative Analysis, Teaching Methods
Shadreck, Mandina; Enunuwe, Ochonogor Chukunoye – Acta Didactica Napocensia, 2017
The study sought to find out difficulties encountered by high school chemistry students when solving stoichiometric problems and how these could be overcome by using a problem-solving approach. The study adopted a quasi-experimental design. 485 participants drawn from 8 highs schools in a local education district in Zimbabwe participated in the…
Descriptors: Foreign Countries, High School Students, Problem Solving, Chemistry
Davis, Eric; Cheung, Ken; Pauls, Steve; Dick, Jonathan; Roth, Elijah; Zalewski, Nicole; Veldhuizen, Christopher; Coeler, Joel – Journal of Chemical Education, 2015
In this laboratory experiment, lower- and upper-division students dissolved bismuth subsalicylate tablets in acid and precipitated the resultant Bi[superscript 3+] in solution with sodium phosphate for a gravimetric determination of bismuth subsalicylate in the tablets. With a labeled concentration of 262 mg/tablet, the combined data from three…
Descriptors: Undergraduate Students, Laboratory Experiments, Statistical Analysis, Stoichiometry
Geyer, Michael J. – Journal of Chemical Education, 2014
A modified technique for demonstrating the magnitude of Avogadro's number using a new Raspberry Pi computer and the Python language is described. The technique also provides students the opportunity to review dimensional analysis.
Descriptors: Technology Uses in Education, Teaching Methods, Courseware, Stoichiometry
Gulacar, Ozcan; Eilks, Ingo; Bowman, Charles R. – Journal of Chemical Education, 2014
This paper reports a comparison of a group of higher-and lower-achieving undergraduate chemistry students, 17 in total, as separated on their ability in stoichiometry. This exploratory study of 17 students investigated parallels and differences in the students' general and domain-specific cognitive abilities. Performance, strategies, and mistakes…
Descriptors: Science Instruction, College Science, Undergraduate Students, Chemistry
Andraos, John – Journal of Chemical Education, 2015
This paper presents a simplified approach for the application of material efficiency metrics to linear and convergent synthesis plans encountered in organic synthesis courses. Computations are facilitated and automated using intuitively designed Microsoft Excel spreadsheets without invoking abstract mathematical formulas. The merits of this…
Descriptors: Organic Chemistry, Case Studies, Efficiency, Synthesis
Ange´lica M. Gonza´lez-Sa´nchez; Edgardo L. Ortiz-Nieves; Zuleikra Medina – Journal of Chemical Education, 2014
Many students share the common belief that the limiting reactant in a chemical reaction is the reactant in the smallest quantity of material. To help students overcome this difficulty a hands-on activity for the limiting reactant concept was developed. The activity incorporates the three levels of representation (macroscopic, submicroscopic, and…
Descriptors: Science Instruction, Chemistry, Scientific Principles, Teaching Methods