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Showing 1 to 15 of 142 results Save | Export
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Preeti S. Kulkarni; Varuna S. Watwe; Sakshi S. Khatavkar; Akshay A. Khandagale; Sunil D. Kulkarni – Journal of Chemical Education, 2023
Flame Emission Spectroscopy (FES) is a powerful analytical technique widely used for identifying and quantifying elements in various samples. In this laboratory experiment, undergraduate students were introduced to FES and its significance in analytical chemistry. The experiment aimed to provide students with hands-on experience in constructing…
Descriptors: Undergraduate Students, Chemistry, Science Instruction, Spectroscopy
Deon T. Miles – Journal of Chemical Education, 2023
Students in a typical instrumental analysis course may learn more than 30 analytical techniques. There are more than 150 components associated with the instrumentation that they learn. To help students organize this large amount of information, we classified these components into four categories: sources, samples, discriminators, and detectors. In…
Descriptors: Pictorial Stimuli, Science Instruction, Teaching Methods, Science Education
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Elia Bergamin; Giacomo Fabris; Matteo Neffat; Paola Baron Toaldo; Daniela De Luchi; Renato Bonomi – Journal of Chemical Education, 2023
A class of 18 students attending the last year of an Italian high school was divided into groups and performed the extraction of pigments contained in hibiscus tea. Each group worked at a different temperature and carried out multiple extractions using distilled water as a solvent. By means of UV-vis spectroscopy it was possible to determine the…
Descriptors: Chemistry, Spectroscopy, Scientific Concepts, Secondary School Science
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Mei Zhang; Wangmin Hu; Wenjing Liu; Chang Lei; Jun Guo; Hongcai Shang; Junling Hou – Journal of Chemical Education, 2022
Interdisciplinary experiments within chemistry are very important for the improvements in the overall quality of the education received by students. In this work, we describe an interdisciplinary experiment that was successfully completed by undergraduate students. This training integrates multiple disciplines including natural product medicinal…
Descriptors: Science Experiments, Laboratory Experiments, Chemistry, Spectroscopy
Elise K. Wilbourn; Sarah Alrimaly; Holly Williams; Jacob Hurst; Gregory P. McGovern; Todd A. Anderson; Naruki Hiranuma – Journal of Chemical Education, 2023
This paper introduces hands-on curricular modules integrated with research in atmospheric ice nucleation, which is an important phenomenon potentially influencing global climate change. The primary goal of this work is to promote meaningful laboratory exercises to enhance the competence of students in the fields of science, technology,…
Descriptors: Science Instruction, Chemistry, Climate, Science Laboratories
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Erduran, Sibel; Wooding, Stephen J. – School Science Review, 2021
Many school practical activities focus on scientific methods such as hypothesis testing. Yet science is more than hypothesis testing: it includes other methods. This article presents a framework called 'Brandon's Matrix' that illustrates the diversity of scientific methods. The matrix has been used as part of Project Calibrate based at the…
Descriptors: Summative Evaluation, Science Process Skills, Foreign Countries, Secondary School Students
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Rattanapirun, Narapat; Laosinchai, Parames – Journal of Chemical Education, 2021
Molecular symmetry is a topic that requires mental manipulation of molecules when searching for symmetry elements and their corresponding symmetry operations. Such mental activities are difficult for students in a traditional classroom where only definitions and demonstrations are provided. Therefore, an exploration-based activity was developed to…
Descriptors: Chemistry, Molecular Structure, College Science, College Students
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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
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Keene, Joseph D.; Kiefer, Adam M. – Journal of Chemical Education, 2021
Lecture-only chemistry courses without a dedicated laboratory component present a significant challenge for instructors to reinforce course content with hands-on learning experiences. This is especially true for lecture courses in which students are unable to directly visualize and operate instrumentation. Herein, we present an in-class activity…
Descriptors: Science Instruction, Lecture Method, Chemistry, Simulation
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Takor, Gaius; Morgan, Christopher E.; Chiu, Liang-Yuan; Kendrick, Nashea; Clark, Emily; Jaiswal, Rohan; Tolbert, Blanton S. – Journal of Chemical Education, 2020
Two-dimensional nuclear magnetic resonance (2D NMR) techniques are regularly used for the determination of RNA structures. In an effort to introduce advanced level students who are generally not acquainted with or exposed to these techniques, this work, which has been designed as a practicum, utilizes a combination of 2D NMR techniques to help…
Descriptors: College Science, Undergraduate Study, Thermodynamics, Spectroscopy
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Zhang, Qian; Liu, Jie; Nai, Xiao; Bao, Hongcui; Sun, Dezhi; Liu, Min – Journal of Chemical Education, 2020
Thermodynamic characterization of micelle formation from an ionic surfactant in aqueous solutions is a classic experiment in physical chemistry. The critical micelle concentration (CMC) and the degree of micelle ionization ([alpha)] can be directly obtained by conductimetry, then thermodynamic parameters ([delta]G[subscript m][superscript o],…
Descriptors: Science Instruction, College Science, Undergraduate Study, Science Laboratories
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Harwood, Cynthia J.; Hewett, Sarah; Towns, Marcy H. – Journal of Chemical Education, 2020
This communicaton shares with the chemistry education community the rubrics used to evaluate student videos associated with using a pipet, using a buret, and making a solution in a volumetric flask that were part of a digital badging project. The rubrics were used across multiple general chemistry courses, hundreds of teaching assistants, and…
Descriptors: Chemistry, Science Education, Science Process Skills, Student Evaluation
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Chan, Kennedy Kam Ho; West-Pratt, Jordan; Ng, Richard Chi Keung – American Biology Teacher, 2021
Students need procedural understanding--that is, knowledge of the procedures that scientists use to establish scientific evidence (also known as "concepts of evidence"), to successfully perform scientific investigations, and to evaluate public and scientific claims. However, concepts of evidence are seldom explicitly targeted in routine…
Descriptors: Science Instruction, Biology, Science Process Skills, Scientific Concepts
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Saba, Shahrokh; Ciaccio, James A.; McMann, Lauren; Tariverdieva, Tamilla – Journal of Chemical Education, 2020
A discovery-based undergraduate organic chemistry lab experiment has been developed in which students establish the diastereoselectivity of hydride reduction of the a-chiral ketone (±)-benzoin isopropyl ether to erythro and threo diastereomeric alcohols by two different reducing agents. Students achieve this goal by working collaboratively and…
Descriptors: Spectroscopy, Science Laboratories, Laboratory Experiments, Undergraduate Students
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Armstrong, Matthew; White, Joshua P.; Hudgins, Jesse W.; Bull, Geoffrey R.; James, Corey M.; Riegner, Dawn E.; Miller, April D.; Biaglow, Andrew – Chemical Engineering Education, 2019
The Kicking Mule Brewing Co. at West Point enables members of our chemical engineering club, students, and beer enthusiasts alike to acquire chemical engineering acumen, knowledge, and skills by developing a tangible product. Through a rigorous on-site brewing process with subject matter experts, our goal is enhancement of student chemical…
Descriptors: Chemical Engineering, Science Process Skills, Skill Development, Hands on Science
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