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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
Wan, Yanjun Jean – ProQuest LLC, 2014
Typically most college curricula include three acid base models: Arrhenius', Bronsted-Lowry's, and Lewis'. Although Lewis' acid base model is generally thought to be the most sophisticated among these three models, and can be further applied in reaction mechanisms, most general chemistry curricula either do not include Lewis' acid base model, or…
Descriptors: College Science, College Students, Chemistry, Science Instruction
Ültay, Neslihan; Çalik, Muammer – EURASIA Journal of Mathematics, Science & Technology Education, 2016
Inability to link the acid-base concepts with daily life phenomena (as contexts) highlights the need for further research on the context-based acid-base chemistry. In this vein, the aim of this study is to investigate the effects of different teaching designs (REACT strategy, 5Es learning model and traditional (existing) instruction) relevant with…
Descriptors: Science Instruction, Teaching Methods, Relevance (Education), Chemistry
Çiçek, Ö.; Ilhan, N. – Chemistry Education Research and Practice, 2017
Students are more likely to be successful in topics they are interested in than others. This study aims to develop an Acid-Base Interest Scale (ABIS) and subsequently evaluate the interest of pre-service science teachers in acids-bases according to gender, years at the university, type of high school the pre-service science teachers attended, and…
Descriptors: Student Interests, Science Interests, Chemistry, Science Tests
Hoe, Kai Yee; Subramaniam, R. – Chemistry Education Research and Practice, 2016
This study presents an analysis of alternative conceptions (ACs) on acid--base chemistry harbored by grade 9 students in Singapore. The ACs were obtained by the development and validation of a 4-tier diagnostic instrument. It is among the very few studies in the science education literature that have focused on examining results based also on…
Descriptors: Foreign Countries, Secondary School Students, Secondary School Science, Chemistry
Karpudewan, Mageswary; Roth, Wolff Michael; Sinniah, Devananthini – Chemistry Education Research and Practice, 2016
In a world where environmental degradation is taking on alarming levels, understanding, and acting to minimize, the individual environmental impact is an important goal for many science educators. In this study, a green chemistry curriculum--combining chemistry experiments with everyday, environmentally friendly substances with a student-centered…
Descriptors: Conservation (Environment), Organic Chemistry, Science Instruction, Teaching Methods
Overly, Kenneth R. – Journal of Chemical Education, 2019
An experiment for the undergraduate organic chemistry laboratory involving a method for the isolation of eugenol from cloves has been developed. The experiment employs microwave-assisted extraction (MAE) of the essential oil from whole cloves using aqueous ethanol and the subsequent isolation of eugenol by acid-base extraction. The MAE allows for…
Descriptors: Undergraduate Students, College Science, Organic Chemistry, Science Experiments
Achmad Rante Suparman; Eli Rohaeti; Sri Wening – Pegem Journal of Education and Instruction, 2024
This research is a systematic literature review study that aims to explore the evidence in publications that report on the types of misconceptions experienced by students in learning chemistry by providing types of students' chemical misconceptions based on levels and obtaining the correct formulation of misconceptions so that they can be used as…
Descriptors: Science Instruction, Chemistry, Scientific Concepts, Misconceptions
Andrews, Jessica L.; de Los Rios, Juan Pablo; Rayaluru, Mythreyi; Lee, Seungwon; Mai, Lilly; Schusser, Anna; Mak, Chi H. – Journal of Chemical Education, 2020
During the COVID-19 pandemic, an at-home laboratory program was created and implemented for a section of the general chemistry course at the University of Southern California. The experiments were designed to only utilize safe household items and no special equipment. These laboratory activities, spanning over 4 weeks, focused on concepts usually…
Descriptors: Science Instruction, Chemistry, Disease Control, School Closing
Grabowski, Lauren E.; Goode, Scott R. – Journal of Chemical Education, 2017
Potentiometric titrations are widely taught in first-year undergraduate courses to connect electrochemistry, stoichiometry, and equilibria and to reinforce acid-base titrations. Students perform a potentiometric titration that is then analyzed to determine analyte concentrations and the solubility product constant of the solid species.
Descriptors: Chemistry, Science Instruction, Scientific Concepts, Undergraduate Study
Wang, Ying; Lewis, Scott E. – Chemistry Education Research and Practice, 2020
Conceptually understanding chemistry requires the ability to transition among representational levels to use an understanding of submicroscopic entities and properties to explain macroscopic phenomena. Past literature describes student struggles with these transitions but provides limited information about upper-level post-secondary chemistry…
Descriptors: Chemistry, Science Process Skills, Undergraduate Students, Science Activities
Alvarado, Clara; Cañada, Florentina; Garritz, Andoni; Mellado, Vicente – Chemistry Education Research and Practice, 2015
The topic of acid-base chemistry is one of the oldest in general chemistry courses and it has been almost continuously in academic discussion. The central purpose of documenting the knowledge and beliefs of a group of ten Mexican teachers with experience in teaching acid-base chemistry in high school was to know how they design, prepare and…
Descriptors: Science Instruction, Teaching Methods, Secondary School Science, Chemistry
Yimkosol, Warangkana; Dangkulwanich, Manchuta – Journal of Chemical Education, 2021
Colorful transitions of various acid-base indicators have been used to illustrate the concept of chemical equilibria, especially in spectrophotometric determination of the equilibrium constants or pKa values. To accommodate an online laboratory environment necessitated by the COVID-19 pandemic, this work employs color analyses from digital images…
Descriptors: Chemistry, Science Instruction, Teaching Methods, Laboratory Experiments
Castro-Godoy, Willber D.; Argüello, Juan E.; Martinelli, Marisa; Caminos, Daniel A. – Journal of Chemical Education, 2018
The different reactivities between 1°, 2°, and 3° butyl chlorides by the unimolecular nucleophilic substitution (S[subscript N]1) mechanism were easily observed at 60 °C by a solvolysis reaction in ethanol with ether formation. The hydrogen ion from the byproduct HCl reacted with an acid--base indicator such as methyl red to induce a color change.…
Descriptors: Science Instruction, Science Experiments, Science Laboratories, Laboratory Experiments
Hanson, Ruby; Seheri-Jele, Naledi – Journal of Turkish Science Education, 2018
The research assessed secondary school students' conceptions of acid-base strengths by using the conceptual change instruction accompanied with concept maps and analogies. These teaching strategies were employed to help them make unfamiliar events familiar. Within a quasi-experimental design, the sample of the study consisted of 73 secondary…
Descriptors: Concept Formation, Scientific Concepts, Concept Teaching, Misconceptions