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Showing 1 to 15 of 156 results Save | Export
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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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Quintano, Mateus M.; Silva, Mateus X.; Belchior, Jadson C.; Braga, Joa~o P. – Journal of Chemical Education, 2021
Periodicity in electronic molar entropy values has been shown on the basis of the electronic structures of the elements. Also, with the approximations discussed herein, one can estimate the electronic molar entropy without atomic spectroscopy results. All of this can be accomplished by showing the connection between the vector model of the atom…
Descriptors: Quantum Mechanics, Molecular Structure, Thermodynamics, Computation
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Porubská, Mária; Jomová, Klaudia; Braniša, Jana – Journal of Chemical Education, 2021
A suitable combined laboratory experiment can involve more chemical disciplines and form students' views on practical connections. A laboratory experiment has been prepared focusing on the adsorption of the dangerous Co(II) ion using natural adsorbents representing waste material of a polysaccharide and keratin nature. Efficiency of Co(II)…
Descriptors: Spectroscopy, Chemistry, Science Instruction, Teaching Methods
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Kearns, James K.; van der Wielen, Matthew – Journal of Chemical Education, 2021
By focusing on food and a pervasive contaminant, this experiment engages student interest and effort while providing essential instruction and experience. As institutions are challenged by existing and emerging budgetary constraints, this experiment offers a determination approach employing commonly available instrumentation, the graphite furnace…
Descriptors: Undergraduate Students, College Science, Chemistry, Laboratory Experiments
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Barrett, Seth M.; Szalay, Paul S.; Zook-Gerdau, Lois Anne; Schurter, Eric J. – Journal of Chemical Education, 2020
In the first-year general chemistry laboratory course, instrumental data collection involving sample quantification has often been limited to absorption spectroscopy due to the inaccessibility of emission techniques suitable for large enrollments and novice users. In this laboratory experiment, students explore the complementary techniques of…
Descriptors: Spectroscopy, Science Instruction, Chemistry, Science Laboratories
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Muna, Grace W. – Journal of Chemical Education, 2021
This article reports on the implementation of a CURE project in an upper-level analytical chemistry course to engage a larger number of students in research at a primarily undergraduate institution (PUI). The lab course syllabus was modified to provide students with an opportunity to experience the process of conducting research through a project…
Descriptors: College Science, Student Projects, Advanced Courses, Undergraduate Students
Minter, Christopher Joel – ProQuest LLC, 2019
The research presented in this dissertation looks at how students in general chemistry reason about atomic emission spectroscopy. Situated within the context of a transformed general chemistry curriculum called "Chemistry, Life, the Universe, and Everything" (CLUE), the goal of this study was to (1) characterize the various ways in which…
Descriptors: Logical Thinking, Chemistry, Spectroscopy, College Science
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Higgins, Pamela J. – Journal of Chemical Education, 2020
Most forensic chemistry experiments focus on the usual suspects involving criminal scenarios: illicit drug identification, gunshot residue detection, blood and fingerprint analysis, and arson investigations. However, environmental forensics involves chemical techniques that can expand the breadth of experience for forensic chemistry students. An…
Descriptors: Crime, Science Experiments, Environmental Research, Science Instruction
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Chinni, Rosemarie C. – Journal of Chemical Education, 2012
This laboratory experiment introduces students to a different type of atomic spectroscopy: laser-induced breakdown spectroscopy (LIBS). LIBS uses a laser-generated spark to excite the sample; once excited, the elemental emission is spectrally resolved and detected. The students use LIBS to analyze a series of standard synthetic silicate samples…
Descriptors: Chemistry, Spectroscopy, Lasers, Laboratory Experiments
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White, Jacob; Costilow, Kimberly; Dotson, Jacob; Mauldin, Robert; Schanandore, Mattie; Shockley, Denise – Journal of Chemical Education, 2021
In this guided-inquiry lesson, students were tasked with determining the efficacy of an at-home drinking water filter at removing lead (Pb) from tap water using graphite furnace atomic absorption spectroscopy by determining the concentration of lead before and after filtration. The lesson was structured to allow students to choose and perform…
Descriptors: Science Instruction, Science Laboratories, Inquiry, Science Experiments
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Bowden, John A.; Nocito, Brian A.; Lowers, Russell H.; Guillette, Louis J., Jr.; Williams, Kathryn R.; Young, Vaneica Y. – Journal of Chemical Education, 2012
This experiment enlightens students on the use of environmental indicators and inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and demonstrates the ability of these monitoring tools to measure metal deposition in environmental samples (both as a result of lab-simulated and real events). In this two-part study, the initial…
Descriptors: Chemistry, Water, Spectroscopy, Fundamental Concepts
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Erasmus, Daniel J.; Brewer, Sharon E.; Cinel, Bruno – Biochemistry and Molecular Biology Education, 2015
The use of internet-based technologies in the teaching of laboratories has emerged as a promising education tool. This study evaluated the effectiveness of using remote access technology to operate an atomic absorption spectrophotometer in analyzing the iron content in a crude myoglobin extract. Sixty-two students were surveyed on their level of…
Descriptors: Internet, Science Instruction, Educational Technology, Science Laboratories
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Kristian, Kathleen E.; Friedbauer, Scott; Kabashi, Donika; Ferencz, Kristen M.; Barajas, Jennifer C.; O'Brien, Kelly – Journal of Chemical Education, 2015
Analysis of mercury in fish is an interesting problem with the potential to motivate students in chemistry laboratory courses. The recommended method for mercury analysis in fish is cold vapor atomic absorption spectroscopy (CVAAS), which requires homogeneous analyte solutions, typically prepared by acid digestion. Previously published digestion…
Descriptors: Science Instruction, Chemistry, Science Laboratories, Spectroscopy
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Niece, Brian K.; Hauri, James F. – Journal of Chemical Education, 2013
Mercury is a known neurotoxin that is particularly harmful to children and unborn fetuses. Consumption of contaminated fish is one major route of mercury exposure. This laboratory experiment gives students an opportunity to measure mercury concentrations in store-bought seafood and compare the results to suggested exposure limits. The U.S.…
Descriptors: Pollution, Chemistry, Science Instruction, College Science
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Erasmus, Daniel J.; Brewer, Sharon E.; Cinel, Bruno – Biochemistry and Molecular Biology Education, 2015
Undergraduate laboratories expose students to a wide variety of topics and techniques in a limited amount of time. This can be a challenge and lead to less exposure to concepts and activities in bio-inorganic chemistry and analytical chemistry that are closely-related to biochemistry. To address this, we incorporated a new iron determination by…
Descriptors: Biochemistry, Inorganic Chemistry, Undergraduate Study, Science Laboratories
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