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Cortés-Figueroa, José E. – Journal of Chemical Education, 2022
This communication describes an activity where upper-level chemistry students explore the determinability of rate constant values without concentration dependences (k[subscript true]) related to a solvent-ligand exchange in a transition metal carbonyl complex. By performing a series of multivariable linear regression (MVLR) analyses of…
Descriptors: Chemistry, Science Instruction, Inquiry, Active Learning
Adams, William; Sonntag, Matthew D. – Journal of Chemical Education, 2022
Electrophilic aromatic substitution (EAS) represents an important class of reactions taught in the undergraduate organic chemistry curriculum. The EAS reaction of benzene and its substituted derivatives is generally described as proceeding through a carbocation (arenium cation) intermediate, and the regiochemistry of the product is heavily…
Descriptors: Undergraduate Students, Science Activities, Computation, Prediction
Corcoran, Emma R.; Lydon, Cassandra; Enright, Mollie C.; Buenaflor, Jeffrey Paz; Anderson, Kate; Wissinger, Jane E. – Journal of Chemical Education, 2022
Comprehensive curricula are described for middle and high school classrooms built around the synthesis of biodegradable calcium alginate capsules prepared from food-safe chemicals. Experiments and activities question whether calcium alginate capsules are a viable alternative to single-use water bottles and consider what characteristics are…
Descriptors: Science Instruction, Chemistry, Middle School Students, High School Students
Wang, Jixin; Zhou, Wenshui; Yu, Mei; Zhu, Zheng; Li, Ying – Journal of Chemical Education, 2022
Cola beverages are widely consumed and popular among students; they can be used as safe reagents to replace toxic chemical dyes. In this study, a safe and improved experiment is described, which successfully demonstrates Beer's law and adsorption process using activated carbon as the adsorbent and cola as the adsorbate. The results of this study…
Descriptors: Chemistry, Science Experiments, Science Instruction, Scientific Concepts
Kelly-Hunt, Alexandra E.; Mehan, Aman; Brooks, Sarah; Leanca, Miron A.; McKay, Jack E. D.; Mahamed, Nashad; Lambert, Daniel; Dempster, Nicola M.; Allen, Robert J.; Evans, Andrew R.; Sarker, Satyajit D.; Nahar, Lutfun; Sharples, George P.; Drew, Michael G. B.; Fielding, Alistair J.; Ismail, Fyaz M. D. – Journal of Chemical Education, 2022
Purpurogallin (PPG), an orange-red crystalline compound from nutgalls and oak bark, is an exemplar of numerous, ubiquitous natural colorants, biosynthesized through oxidative dimerization-decarboxylation of phenolic compounds. It possesses antioxidant, anticancer, and anti-inflammatory effects. Herein, a robust method is presented to allow…
Descriptors: Science Instruction, Spectroscopy, Science History, Pharmacology
Jurinovich, Sandro; Domenici, Valentina – Journal of Chemical Education, 2022
UV-vis absorption spectroscopy is one of the most accessible spectroscopic techniques at the high school educational level, and it is usually introduced in analytical chemistry courses due to its high versatility and to the wide range of applications in many fields of chemistry. Within this framework, we have developed an easy-to-use"…
Descriptors: College Science, Secondary School Science, College Students, High School Students
Yao, Bo; Sun, Danyang; Ren, Yongan; Wang, Min – Journal of Chemical Education, 2022
Quantitative analysis in analytical chemistry is divided into semi-,relative, and absolute analysis. An example of each analysis is pH test paper, internal standard, and standard addition, respectively. However, their definition and differences have not yet been explained to students sufficiently in classes as well as textbooks. Polymerase chain…
Descriptors: College Science, Science Instruction, Graduate Students, College Seniors
Zhu, Pengfei; Ling, Yizhou – Journal of Chemical Education, 2022
Conventional mobile phone colorimetry usually utilizes the RGB color mode to measure concentration of solutions, but the paper entitled "Determining the Amount of Copper(II) Ions in a Solution Using a Smartphone" proposes the use of hue ("H") to measure the concentration. It is pointed out that the "H" value increases…
Descriptors: Color, Telecommunications, Handheld Devices, Measurement
Clark, Ted M.; Dickson-Karn, Nicole M.; Anderson, Ellie – Journal of Chemical Education, 2022
Student performance calculating the pH of a strong acid or strong base solution before and after instruction in general and analytical chemistry courses was investigated using open-response questions in which a pH equation was not provided. Prior to instruction, students in both classes scored very low. General chemistry students lacking prior…
Descriptors: Chemistry, Science Activities, Computation, Scientific Concepts
Garza, Nicholas F.; Finkenstaedt-Quinn, Solaire A.; Shultz, Ginger V.; Zimmerman, Steven C. – Journal of Chemical Education, 2022
Organic chemistry courses enroll students from many majors with diverse interests. Although instructors may strive to appeal to these interests by relating course content to real life, it is challenging to intrinsically appeal to students at the personal level, particularly in high enrollment courses like organic chemistry. When students identify…
Descriptors: Organic Chemistry, Science Instruction, Course Content, Teaching Methods
Corrales, Adriana; Komperda, Regis – Journal of Chemical Education, 2022
Graduate education in chemistry typically follows an apprenticeship model, primarily aimed at preparing students for academia; however, the inclusion of teaching within this apprenticeship is not always clear as faculty, students, and other stakeholders do not agree on the need for instructional training. Despite the variability in training, a…
Descriptors: Graduate Students, College Science, Science Instruction, Teaching Assistants
King, David; Snyman, Magrieta; McGinitie, Elizabeth G. – Journal of Chemical Education, 2022
The global COVID-19 pandemic has had a significant impact on university course design, implementation, and instruction, with many courses being offered remotely rather than face-to-face to prevent the spread of COVID-19. As the COVID-19 pandemic subsides, more and more courses are transitioning back to face-to-face instruction. In this article, we…
Descriptors: Science Instruction, COVID-19, Pandemics, College Science
Horikoshi, Ryo; Shirotani, Dai; Shioyama, Hiroshi – Journal of Chemical Education, 2022
Buckminsterfullerene (C[subscript 60]), along with diamond and graphite, appears in many chemistry textbooks as an example of an allotrope of carbon. This communication describes a hands-on activity to explore the characteristic structure of C[subscript 60] through the construction of a structural model using transistors and plastic tubes…
Descriptors: Chemistry, Science Instruction, Hands on Science, Models
Qu, Andrew; Nicolas, Madeleine; Leung, Eric Minshing; Jones, Serena Monique; Katyal, Priya; Punia, Kamia; Maxfield, Macrae; Montclare, Jin Kim – Journal of Chemical Education, 2022
Virtual chemistry laboratory modules were investigated as a potential learning resource that complements traditional in-person experiments. In collaboration with a high school instructor, we designed two interactive modules, "Rates of Reaction" and "Models of Organic Molecules," which became part of a previously reported online…
Descriptors: Electronic Learning, Science Experiments, Chemistry, High School Students
Jennifer G., Abigail; Jenny, Jeslin C.; Balaji, Vijayarangan Prasanna; Yadav, Rakhi – Journal of Chemical Education, 2022
Chemistry and innovations have long been coexisting in the classroom and are essential criteria for assessment. Chemistry entrepreneurship is the art of commercializing chemistry innovations and ideas to a wider audience, taking them beyond classroom and assessment. The innovative ideas when realized with social relevance show prospects for…
Descriptors: Chemistry, Science Instruction, Entrepreneurship, Sustainability