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Showing 1 to 15 of 253 results Save | Export
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Barrera, Luis A.; Alma C. Escobosa; Alsaihati, Laila S.; Noveron, Juan C. – Journal of Chemical Education, 2019
Herein we present a modified iodine clock experiment which replaces starch with cellulose paper. This provides the reaction with a white solid surface in which color change can be clearly observed and reduces reagent amounts required to 540 µL per group. After data acquisition, students are required to calculate reaction orders and the reaction…
Descriptors: Science Experiments, Chemistry, Kinetics, Science Laboratories
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Agcali, Rahime Yagmur; Atik, Bahar; Bilgen, Ecenaz; Karli, Berfu; Danisman, Mehmet Fatih – Journal of Chemical Education, 2019
Understanding the concepts of quantum mechanics has always been a challenge for undergraduate students. This is especially so because many of the introductory (analytically solvable) systems and problems discussed in textbooks are seemingly abstract. Using approximate experimental demonstrations of such systems and problems have been shown to be…
Descriptors: Science Instruction, Undergraduate Students, College Science, Quantum Mechanics
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Ferreiro-González, Marta; Amores-Arrocha, Antonio; Espada-Bellido, Estrella; Aliaño-Gonzalez, María José; Vázquez-Espinosa, Mercedes; González-de-Peredo, Ana V.; Sancho-Galán, Pau; Álvarez-Saura, José Ángel; Barbero, Gerardo F.; Cejudo-Bastante, Cristina – Journal of Chemical Education, 2019
"Escape ClassRoom "CSI 1.0"" is an educational escape room proposed as an interactive analytical chemistry exercise for the evaluation of undergraduate students at the end of the subject. This approach is a new form of live action learning activity in which the students have to solve an analytical problem, namely, "an…
Descriptors: Science Instruction, Teaching Methods, Chemistry, College Science
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Sansom, Rebecca L.; Suh, Erica; Plummer, Kenneth J. – Journal of Chemical Education, 2019
Heat and enthalpy are challenging topics for general chemistry students because they are conceptually complex and require avariety of quantitative problem-solving approaches. Expert chemists draw on conditional knowledge, deciding when and under what conditions a certain problem-solving approach should be used. Decision-based learning (DBL)…
Descriptors: Decision Making, Problem Solving, Science Instruction, Chemistry
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Shultz, Ginger V.; Zemke, Jennifer M. – Journal of Chemical Education, 2019
The development of expertise in chemical information literacy requires practicing these skills in the context of chemistry work. The integration of information literacy in problem-based learning is an instructional strategy that can be used to situate skill development in the chemistry classroom. This work describes a mixed-methods approach to…
Descriptors: Chemistry, Science Instruction, Science Laboratories, Problem Solving
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Kovarik, Michelle L.; Robinson, Jill K. – Journal of Chemical Education, 2019
A collaborative learning module for teaching protein mass spectrometry has been developed to overcome common obstacles to incorporating the modern topic of biological mass spectrometry into the undergraduate chemistry curriculum. Protein mass spectrometry data is provided to eliminate the need for expensive instrumentation, and an instructor's…
Descriptors: Cooperative Learning, Spectroscopy, College Science, Science Instruction
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Vergne, Matthew J.; Simmons, Joshua D.; Bowen, Ryan S. – Journal of Chemical Education, 2019
An escape-room-game activity was introduced to foster team building and collaborative learning in a laboratory-experiment setting. The students were placed in a laboratory with clues and puzzles that required the students to use a sequence of analytical instruments in the laboratory in order to escape. The instruments utilized included a UV-vis…
Descriptors: Educational Games, Science Laboratories, Laboratory Experiments, Cooperative Learning
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Haley, Rebecca A.; Ringo, Jessica M.; Hopgood, Heather; Denlinger, Kendra Leahy; Das, Anushree; Waddell, Daniel C. – Journal of Chemical Education, 2018
Green chemistry and sustainability have garnered more awareness in the chemical industry in recent years, but green chemistry classes are still not commonplace for either the undergraduate or graduate student curriculum. Additionally, many departments are seeking avenues to reach greater numbers and types of learners through online courses. To…
Descriptors: Undergraduate Students, Chemistry, Sustainability, Online Courses
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Mercier, Philippe H. – Journal of Chemical Education, 2018
Le Châtelier's principle is used as a basis to derive an expression to calculate solution pH during titrations that involve only strong acids and strong bases. Central to this model are the reaction quotient and a re-equilibration term that represents the extent of neutralization during a titration. Unlike the method traditionally taught to…
Descriptors: Science Instruction, Scientific Principles, College Science, Undergraduate Study
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Cherrette, Vivien L.; Hutcherson, Connor J.; Barnett, Jeremy L.; So, Monica C. – Journal of Chemical Education, 2018
Perovskite solar cells have garnered exponential research interest due to their facile fabrication, solution processability, and low cost. However, there have been limited efforts to integrate this class of materials into the undergraduate laboratory curriculum. Therefore, we designed an integrated laboratory experiment in our upper-division…
Descriptors: Laboratory Experiments, Learning Experience, Integrated Activities, Undergraduate Students
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Tellinghuisen, Joel – Journal of Chemical Education, 2018
For the least-squares analysis of data having multiple uncertain variables, the generally accepted best solution comes from minimizing the sum of weighted squared residuals over all uncertain variables, with, for example, weights in x[subscript i] taken as inversely proportional to the variance [delta][subscript xi][superscript 2]. A complication…
Descriptors: Chemistry, Least Squares Statistics, Data Analysis, Spreadsheets
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Alcantara-Garcia, Jocelyn; Ploeger, Rebecca – Journal of Chemical Education, 2018
Polymers are present in most organic materials in the field of cultural heritage science and art conservation. This makes the study of polymer chemistry necessary in art conservation graduate training programs. Given each program approaches this important topic in different ways, the present paper describes areas of common ground and problems we,…
Descriptors: Science Instruction, Chemistry, Organic Chemistry, Plastics
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Talanquer, Vicente – International Journal of Science Education, 2018
One of the central goals of modern science and chemistry education is to develop students' abilities to understand complex phenomena, and productively engage in explanation, justification, and argumentation. To accomplish this goal, we should better characterise the types of reasoning that we expect students to master in the different scientific…
Descriptors: Science Education, Chemistry, Science Process Skills, Abstract Reasoning
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Bopegedera, A. M. R. P. – Journal of Chemical Education, 2018
The oxidation of iron is an important reaction due to its high economic impact. In this laboratory exploration, the total order of this reaction was determined using commercially available handwarmer packets that rely on the iron-oxygen reaction to generate heat. The active ingredient in the handwarmer packet is iron, which interacts with…
Descriptors: Kinetics, Chemistry, Scientific Concepts, Conservation (Environment)
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Bellová, Renata; Melichercíková, Danica; Tomcík, Peter – Journal of Chemical Education, 2018
This paper describes the implementation of problem-based learning in chemical education with regard to the impact that protolytic reactions have on equilibria. The problem-based task presented here is focused on extremely weak acids and calcuation of the pH value of their aqueous solutions. The task is based on comparisons of K[subscript a] ranges…
Descriptors: Chemistry, Problem Based Learning, Equations (Mathematics), Mathematical Formulas
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