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Showing 1 to 15 of 69 results Save | Export
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Seethaler, Sherry; Czworkowski, John; Wynn, Lynda – Journal of Chemical Education, 2018
Change over time is a crosscutting theme in the sciences that is pivotal to reaction kinetics, an anchoring concept in undergraduate chemistry, and students' struggles with rates of change are well-documented. Informed by the education scholarship in chemistry, physics, and mathematics, a research team with members from complementary disciplinary…
Descriptors: Chemistry, College Freshmen, Science Education, Textbook Content
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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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Felton, Daniel E.; Moberly, James G.; Ederer, Martina M.; Hartzell, Patricia L.; Waynant, Kristopher V. – Journal of Chemical Education, 2018
Additions to the popular evaporation rate determination laboratory of alcohol-based hand-rub sanitizers are described here. Significantly, inquiry-driven protocols for formulating hand-rub sanitizers, falling-ball viscometry, and sanitizer efficacy are included. Incorporation of familiar substances ("molecular relevance") enables…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Study
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Chadwick, Scott; de la Hunty, Mackenzie; Baker, Anthony – Journal of Chemical Education, 2018
Students in first-year chemistry classes come from a variety of backgrounds, with many students unaware of the qualities and behaviors of a professional scientist. Throughout their degree, students will gradually develop their cognitive skills, but they may not be adequately taught or assessed on their professional behavioral skills as a scientist…
Descriptors: Chemistry, Laboratory Procedures, Professional Identity, Professionalism
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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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Winkelmann, Kurt; Bernas, Leonard; Swiger, Brendan; Brown, Shannon – Journal of Chemical Education, 2017
A two-week experiment is presented in which students can observe the impact of nanoparticles on the concentration of chlorophyll in plants. First-year students in an introductory nanotechnology laboratory course and a general chemistry laboratory course synthesized silver nanoparticles and then exposed stalks of "Egeria densa" ("E.…
Descriptors: College Freshmen, Chemistry, Introductory Courses, Botany
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Bunce, Diane M.; Komperda, Regis; Dillner, Debra K.; Lin, Shirley; Schroeder, Maria J.; Hartman, JudithAnn R. – Journal of Chemical Education, 2017
Students with an insufficient amount of time to study are becoming more prevalent in the general college population as many who enroll in college have competing responsibilities (full-time jobs, childcare, etc.). Such students are likely to choose study resources that they consider to be both effective and efficient. Students at the U.S. Naval…
Descriptors: Science Instruction, Chemistry, Study Habits, Study Skills
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Kazmierczak, Nathanael; Vander Griend, Douglas A. – Journal of Chemical Education, 2017
Despite widespread use in general chemistry laboratories, the crystal violet chemical kinetics experiment frequently suffers from erroneous student results. Student calculations for the reaction order in hydroxide often contain large asymmetric errors, pointing to the presence of systematic error. Through a combination of "in silico"…
Descriptors: Kinetics, Chemistry, Science Instruction, Science Experiments
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Urban, Sylvia; Brkljaca, Robert; Cockman, Russell; Rook, Trevor – Journal of Chemical Education, 2017
First-year undergraduate classes present challenges in teaching as they usually have high student enrolment numbers and students studying across a range of higher education programs that require a fundamental understanding of knowledge that is not perceived in their area of study. This provides a challenge in terms of engaging and maintaining…
Descriptors: College Freshmen, Chemistry, Educational Technology, Video Technology
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Chiu, Yu-Chun; Jenks, Matthew A.; Richards-Babb, Michelle; Ratclif, Betsy B.; Juvik, John A.; Ku, Kang-Mo – Journal of Chemical Education, 2017
We report here the development of an inexpensive and engaging laboratory-based activity that can help students learn about the scientific method and the role of plant epicuticular waxes and surfactant function on waxy plant leaves as real life example in the agricultural industry. Three each of nontreated collard leaves ("Brassica…
Descriptors: Introductory Courses, College Freshmen, Science Laboratories, Science Instruction
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Damkaci, Fehmi; Braun, Timothy F.; Gublo, Kristin – Journal of Chemical Education, 2017
We describe the design and implementation of an undergraduate peer mentor program that can overlay an existing general chemistry laboratory and is designed to improve STEM student retention. For the first four freshman cohorts going through the program, year-to-year retention improved by a four-year average of 20% for students in peer-mentored…
Descriptors: Undergraduate Students, College Science, Science Instruction, Chemistry
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Fung, Fun Man – Journal of Chemical Education, 2017
Currently there are two primary methods of recording flipped classroom videos: (1) using the white board and (2) screencasting a PowerPoint presentation. Both methods have several disadvantages. In the former, the presenter's body obscures the content. Both methods lack an element of human interaction between the viewers and presenter and require…
Descriptors: Chemistry, Science Instruction, Learner Engagement, Video Technology
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Bunce, Diane M.; Komperda, Regis; Schroeder, Maria J.; Dillner, Debra K.; Lin, Shirley; Teichert, Melonie A.; Hartman, JudithAnn R. – Journal of Chemical Education, 2017
This study examined similarities and differences in study approaches reported by general chemistry students performing at different achievement levels. The study population consisted of freshmen enrolled in a required year-long general chemistry course at the U.S. Naval Academy. Students in the first and second semesters of the course were…
Descriptors: Chemistry, Military Science, College Freshmen, Study Skills
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de la Pen~a, Lisandro Herna┬┤ndez – Journal of Chemical Education, 2016
The solution of simple kinetic equations is analyzed without referencing any topic from differential equations or integral calculus. Guided by the physical meaning of the rate equation, a systematic procedure is used to generate an approximate solution that converges uniformly to the exact solution in the case of zero, first, and second order…
Descriptors: Kinetics, Chemistry, Problem Solving, Equations (Mathematics)
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Guron, Marta; Paul, Jared J.; Roeder, Margaret H. – Journal of Chemical Education, 2016
Although much of the scientific community concerns itself with ideas of a sustainable future, very little of this interest and motivation has reached the classroom experience of the average chemistry major, and therefore, it is imperative to expose students to these ideas early in their careers. The focus of most undergraduate chemistry curricula…
Descriptors: Chemistry, Science Instruction, Majors (Students), Sustainability
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