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McEvoy, James P. – Biochemistry and Molecular Biology Education, 2020
Undergraduate biochemistry students frequently find the quantitative treatment of weak acids and bases troublesome. Given the p"K"[subscript a] of a weak acid "HA," for instance, many students struggle to calculate the pH of a solution of the conjugate base A[superscript -] at concentration "C," pH(A[superscript -],…
Descriptors: Biochemistry, Undergraduate Students, Science Instruction, Risk
Eliyawati; Agustin, Rika Rafikah; Sya'bandari, Yustika; Putri, Rossy Andini Herindra – Journal of Science Learning, 2020
An android application named SmartChem was developed to explain multiple representations of acid-base chemistry. This paper is a description of an android-based media (SmartChem) through the stages of design, development, validation and revision, and finally, limited trials with pre-service science teachers. SmartChem is intended to aid students…
Descriptors: Science Instruction, Chemistry, Educational Technology, Telecommunications
Yaman, Fatma; Ayas, Alipasa; Çalik, Muammer – Turkish Journal of Education, 2019
The purpose of this study was to enhance grade 11 students' conceptual understanding of fundamental acid-base models using Predict-Observe-Explain based animated movies (POE-AM). Twelve grade 11 students participated in the study. To collect data, the students' responses to the POE-AM tasks and interview protocols were used. The findings indicated…
Descriptors: High School Students, Grade 11, Adolescents, Concept Formation
Esselman, Brian J.; Hill, Nicholas J.; Ellison, Aubrey J. – Journal of Chemical Education, 2021
The acid-catalyzed dehydration of regioisomeric methylcyclohexanols is a classic organic chemistry experiment featured in a variety of laboratory textbooks and literature. The mechanistic details of this reaction have received an inconsistent and occasionally inaccurate treatment, wherein the reaction has been described as a mix of E1, E2-like,…
Descriptors: Organic Chemistry, Laboratory Experiments, Models, Thermodynamics
Birchall, Lee T.; Shehata, Sara; Serpell, Christopher J.; Clark, Ewan R.; Biagini, Stefano C. G. – Journal of Chemical Education, 2021
The thermal equilibration of himic anhydride [IUPAC (2-"endo,"3-"endo")-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid anhydride] to (2-"exo,"3-"exo")-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid anhydride and subsequent recrystallization of the "exo"-product can be performed as a standard…
Descriptors: Organic Chemistry, Scientific Concepts, Undergraduate Students, Laboratory Experiments
Sugiarti; Husain, Halimah – International Journal of Instruction, 2021
Academic honesty is a fundamental property of character values from an early age. It should be integrated into every learning process in the context of habituation towards continual learning. This study aimed to investigate student's academic honesty through acid-base material in chemistry using contextual-based discovery learning (CDL) model. By…
Descriptors: Discovery Learning, Models, Cheating, Ethics
Roscales, Silvia; Csákÿ, Aurelio G. – Journal of Chemical Education, 2019
A method for the synthesis of flufenamic acid, a nonstereoidal anti-inflammatory drug (NSAID) of the anthranilate family (fenams), is described as an experiment for the upper-division undergraduate organic chemistry laboratory. The key step is the formation of the diarylamine moiety of flufenamic acid by a novel reaction consisting of the coupling…
Descriptors: Chemistry, Science Instruction, Organic Chemistry, Laboratory Experiments
Nutrient Intake and Adequacy in Children with Autism Spectrum Disorder: EPINED Epidemiological Study
Arija, Victoria; Esteban-Figuerola, Patricia; Morales-Hidalgo, Paula; Jardí, Cristina; Canals-Sans, Josefa – Autism: The International Journal of Research and Practice, 2023
This article assesses nutritional intake and adequacy in children with autism spectrum disorder (ASD), subdiagnostic autistic symptoms and children with typical development (TD). In total, 77 children diagnosed with ASD, 40 with subdiagnostic autistic symptoms and 333 children with TD were assessed. A validated food frequency questionnaire was…
Descriptors: Autism Spectrum Disorders, Control Groups, Food, Nutrition
Goeltz, John C.; Cuevas, Lia A. – Journal of Chemical Education, 2021
Acid-base titration laboratories are perennially offered to general chemistry students in preparation for summative assessments of their hands-on and quantitative skills in the field. Here, we present a guided inquiry-based activity focused on total titratable acidity (TTA) as alternative to standard "cookbook" titration laboratory work.…
Descriptors: Science Instruction, Laboratory Training, Science Laboratories, Inquiry
Dood, Amber J.; Fields, Kimberly B.; Raker, Jeffrey R. – Journal of Chemical Education, 2018
The Lewis acid-base model is key to identifying and explaining the formation and breaking of bonds in a large number of reaction mechanisms taught in the sophomore-level year-long organic chemistry course. Understanding the model is, thus, essential to success in organic chemistry coursework. Concept-inventories exist to identify misunderstandings…
Descriptors: Science Instruction, College Science, Undergraduate Study, Scientific Concepts
Petrosko, Sarah Hurst; Coleman, Benjamin D.; Drout, Riki J.; Schultz, Jonathan D.; Mirkin, Chad A. – Journal of Chemical Education, 2021
Nanoscience and technology research offer exciting avenues to modernize undergraduate-level General Chemistry curricula. In particular, spherical nucleic acid (SNA) nanoconjugates, which behave as "programmable atom equivalents" (PAEs) in the context of colloidal crystals, are one system that one can use to reinforce foundational…
Descriptors: Chemistry, Molecular Structure, Technology, Undergraduate Students
Zhang, Huaihao; Bai, Yongqing; Zhao, Jing; Shi, Qiaofang; Zang, Yang; Wu, Jun – Journal of Chemical Education, 2021
As an outcome of multidiscipline integration, the polymeric surfactant is of growing importance in modern industry and scientific research. However, the instructional introduction on polymeric surfactants is still insufficient in universities nowadays. In order to effectively guide undergraduates to study polymeric surfactant, a new polymeric…
Descriptors: Chemistry, Undergraduate Students, Science Instruction, Scientific Concepts
Morgan, Scott; Randle, Atilla; Coombs, Rachel; Yhnell, Emma – Journal of STEM Outreach, 2020
We describe the design, creation, and preliminary evaluation of a hands-on interactive game, "Giant Genes," which was developed to explain the concept of genetics and the central dogma of gene expression to audiences at Cardiff University's Brain Games. The Giant Genes game is a modified version of the traditional game "Jenga."…
Descriptors: Game Based Learning, Curriculum Development, Learner Engagement, Genetics
Akbulut, Taner – Higher Education Studies, 2020
Physiological effects of aerobic and anaerobic exercises are frequently investigated. However, it is considered that combined exercises may be more effective. The aim of this study was to investigate the effect of aerobic and combined exercise program on some biochemical parameters. The study group consisted of 45 male volunteers with sedentary…
Descriptors: Exercise Physiology, College Students, Life Style, Exercise
K. Fernando, L. S. Lanka; Perera, L. Hasini R. – Journal of Chemical Education, 2022
During the 1960s, Edgar Dale published the concept that learners are likely to retain more information if they see and hear information rather than just listen. Therefore, many educational applications have been created for students to learn theoretical concepts through visuals and in an interactive manner. Microsoft (MS) Excel has been used in…
Descriptors: Science Instruction, Scientific Concepts, Concept Formation, Spreadsheets