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Abell, Timothy N.; Bretz, Stacey Lowery – Journal of Chemical Education, 2019
The Enthalpy and Entropy in Dissolution and Precipitation Inventory (E2DPI) has been developed to measure student understanding of the dissolution of ionic solutes, aqueous precipitation reactions, and the enthalpy and entropy changes that accompany these processes. The E[subscript 2]DPI was designed using a mixed-methods protocol, such that the…
Descriptors: Chemistry, Science Instruction, Scientific Concepts, Teaching Methods
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Croisant, Michael; Bretz, Stacey Lowery; Konkolewicz, Dominik – Journal of Chemical Education, 2019
The ACS Guidelines for bachelor's degrees in chemistry call for the curriculum to include polymer chemistry principles and the synthesis of different classes of macromolecules. Organic chemistry can provide an important introduction to polymer chemistry principles, and photochemically induced radical polymerization is one method for generating…
Descriptors: Chemistry, Science Instruction, Inquiry, Discovery Learning
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Abell, Timothy N.; Bretz, Stacey Lowery – Journal of Chemical Education, 2019
Learning thermodynamics requires understanding abstract topics such as entropy and spontaneity. Students tend to rely on metaphors and everyday meanings to reason about these topics. This study investigates how students explain dissolution and precipitation using the concepts of entropy and spontaneity. Students from general chemistry, physical…
Descriptors: Thermodynamics, Science Instruction, Scientific Concepts, Chemistry
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Allred, Zahilyn D. Roche; Bretz, Stacey Lowery – Journal of Chemical Education, 2019
This article describes the development of the Quantization and Probability Representations Inventory (QuPRI) as a measure of student understanding of the electron structure of the atom. The QuPRI was created using a mixed-method sequential design such that the items and distractors were generated on the basis of the analysis of semi-structured…
Descriptors: Science Instruction, High Schools, Secondary School Science, Undergraduate Study
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Bretz, Stacey Lowery; Murata Mayo, Ana Vasquez – Journal of Chemical Education, 2018
This study reports the development of a 19-item Flame Test Concept Inventory, an assessment tool to measure students' understanding of atomic emission. Fifty-two students enrolled in secondary and postsecondary chemistry courses were interviewed about atomic emission and explicitly asked to explain flame test demonstrations and energy level…
Descriptors: Chemistry, Science Instruction, Secondary School Science, College Science
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Padilla Mercado, Jeralyne B.; Coombs, Eri M.; De Jesus, Jenny P.; Bretz, Stacey Lowery; Danielson, Neil D. – Journal of Chemical Education, 2018
Multifunctional chemical analysis (MCA) systems provide a viable alternative for large scale instruction while supporting a hands-on approach to more advanced instrumentation. These systems are robust and typically use student stations connected to a remote central computer for data collection, minimizing the need for computers at every student…
Descriptors: Chemistry, Science Education, Hands on Science, Scientific Concepts
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Abell, Timothy N.; Bretz, Stacey Lowery – Journal of Chemical Education, 2018
This study investigates how students account for a macroscopic temperature change during the dissolution of ionic salts through particulate level explanations. Semi-structured interviews were conducted with general chemistry, physical chemistry, and biophysical chemistry students. During the interviews, students conducted hands-on tasks that…
Descriptors: Semi Structured Interviews, Chemistry, Hands on Science, College Freshmen
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Popova, Maia; Bretz, Stacey Lowery – Journal of Chemical Education, 2018
Thirty-six students enrolled in Organic Chemistry II participated in individual, semistructured, think-aloud interviews about the factors that contribute to the stability and reactivity of organic species in the context of unimolecular and bimolecular nucleophilic substitution and elimination reactions. The students were provided with the…
Descriptors: Science Instruction, Organic Chemistry, Semi Structured Interviews, Protocol Analysis
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Popova, Maia; Bretz, Stacey Lowery – Journal of Chemical Education, 2018
The purpose of this study was to analyze organic chemistry students' annotations of reaction coordinate diagrams to better understand how they sought connections between reactions and reaction coordinate diagrams. Thirty-six students enrolled in Organic Chemistry II participated in semistructured, think-aloud interviews that asked students to…
Descriptors: Organic Chemistry, Undergraduate Students, Misconceptions, Problem Solving
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Abell, Timothy N.; McCarrick, Robert M.; Bretz, Stacey Lowery; Tierney, David L. – Journal of Chemical Education, 2017
A structured inquiry experiment for inorganic synthesis has been developed to introduce undergraduate students to advanced spectroscopic techniques including paramagnetic nuclear magnetic resonance and electron paramagnetic resonance. Students synthesize multiple complexes with unknown first row transition metals and identify the unknown metals by…
Descriptors: Inorganic Chemistry, Undergraduate Students, Laboratory Procedures, Laboratory Experiments
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Popova, Maia; Bretz, Stacey Lowery; Hartley, C. Scott – Journal of Chemical Education, 2016
Although stereochemistry is an important topic in second-year undergraduate organic chemistry, there are limited options for laboratory activities that allow direct visualization of macroscopic chiral phenomena. A novel, guided-inquiry experiment was developed that allows students to explore chirality in the context of cholesteric liquid crystals.…
Descriptors: Visualization, Molecular Structure, Teaching Methods, Organic Chemistry
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Galloway, Kelli R.; Malakpa, Zoebedeh; Bretz, Stacey Lowery – Journal of Chemical Education, 2016
Meaningful learning requires the integration of cognitive and affective learning with the psychomotor, i.e., hands-on learning. The undergraduate chemistry laboratory is an ideal place for meaningful learning to occur. However, accurately characterizing students' affective experiences in the chemistry laboratory can be a very difficult task. While…
Descriptors: Science Instruction, College Science, Chemistry, Science Laboratories
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Galloway, Kelli R.; Bretz, Stacey Lowery; Novak, Michael – Journal of Chemical Education, 2015
A variety of fruits and vegetables, including raspberries, blueberries, Concord grapes, blackberries, strawberries, peaches, eggplant, red cabbage, and red onions, contain flavonoid compounds known as anthocyanins that are responsible for the blue-red color and the astringent taste associated with such foods. In addition, anthocyanins exhibit a…
Descriptors: Science Instruction, Spectroscopy, Organic Chemistry, Science Laboratories
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Bretz, Stacey Lowery; McClary, LaKeisha – Journal of Chemical Education, 2015
Most organic chemistry reactions occur by a mechanism that includes acid-base chemistry, so it is important that students develop and learn to use correct conceptions of acids and acid strength. Recent studies have described undergraduate organic chemistry students' cognitive resources related to the Brønsted-Lowry acid model and the Lewis acid…
Descriptors: Knowledge Level, Familiarity, Organic Chemistry, Scientific Literacy
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Galloway, Kelli R.; Bretz, Stacey Lowery – Journal of Chemical Education, 2015
Research on laboratory learning points to the need to better understand what and how students learn in the undergraduate chemistry laboratory. The Meaningful Learning in the Laboratory Instrument (MLLI) was administered to general and organic chemistry students from 15 colleges and universities across the United States in order to measure the…
Descriptors: Chemistry, College Science, Science Instruction, Science Laboratories
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