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Prabpal, Jutamat; Vilaivan, Tirayut; Praneenararat, Thanit – Journal of Chemical Education, 2017
Tetrakis(4-sulfonatophenyl)porphyrin (TSPP) was immobilized on patterned paper and used as a sensor for heavy metal ions in an advanced organic chemistry course. The resulting sensor could detect Hg[superscript 2+] and Cd[superscript 2+] ions colorimetrically, while Cu[superscript 2+] ion resulted in fluorescence quenching, thus demonstrating a…
Descriptors: Organic Chemistry, Paper (Material), Metallurgy, Advanced Courses
Amaris, Zoe N.; Freitas, Daniel N.; Mac, Karen; Gerner, Kyle T.; Nameth, Catherine; Wheeler, Korin E. – Journal of Chemical Education, 2017
A series of laboratory experiments were developed to introduce first-year chemistry students to nanoscience through a green chemistry approach. Students made and characterized the stability of silver nanoparticles using two different methods: UV-visible spectroscopy and dynamic light scattering. They then assessed the ecotoxicity of silver…
Descriptors: Science Instruction, College Science, Undergraduate Study, Chemistry
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
Burrows, Nikita L.; Nowak, Montana K.; Mooring, Suazette R. – Chemistry Education Research and Practice, 2017
Students can perceive the laboratory environment in a variety of ways that can affect what they take away from the laboratory course. This qualitative study characterizes undergraduate students' perspectives of a project-based Organic Chemistry laboratory using the theoretical framework of phenomenography. Eighteen participants were interviewed in…
Descriptors: Science Instruction, Organic Chemistry, Science Laboratories, College Science
Morales, Asia Liza; Rowton, Edgar; Anderson, Margery; Yourick, Debra – Science Teacher, 2017
During the Jurassic period (201 million to 145 million years ago), termites up to 15 mm long consumed and recycled vegetation and feces. Since then, termites have evolved into some 3,000 identified species, have colonized every continent except Antarctica, and are major contributors to nutrient cycling and vertebrate food webs (Shaw 2014).…
Descriptors: Entomology, Scientific Concepts, Adjustment (to Environment), Investigations
Fedick, Patrick W.; Bain, Ryan M.; Bain, Kinsey; Cooks, R. Graham – Journal of Chemical Education, 2017
The goal of this laboratory exercise was for students to understand the concept of chirality and how enantiomeric excess (ee) is experimentally determined using the analysis of ibuprofen as an example. Students determined the enantiomeric excess of the analyte by three different instrumental methods: mass spectrometry, nuclear magnetic resonance…
Descriptors: Measurement Equipment, Science Equipment, Science Instruction, Chemistry
Perez-Benito, Joaquin F. – Journal of Chemical Education, 2017
The elementary reaction sequence A ? I ? Products is the simplest mechanism for which the steady-state and quasi-equilibrium kinetic approximations can be applied. The exact integrated solutions for this chemical system allow inferring the conditions that must fulfill the rate constants for the different approximations to hold. A graphical…
Descriptors: Chemistry, Kinetics, Scientific Concepts, Graduate Study
Heck, André; van Buuren, Onne – Physics Education, 2017
We describe a simple experiment about sliding friction of an object moving with non-constant speed along an inclined plane. This experiment can be used to study the entire dynamical process of force and motion in various ways, depending on the mathematical level of the students. We discuss how video measurement and analysis, and mathematical…
Descriptors: Science Instruction, Science Experiments, Scientific Concepts, Motion
Ayop, Shahrul Kadri – Physics Teacher, 2017
The iPhone 6 introduced a new feature of recording video in Slo-Mo mode at 240 fps (4.17 ms interval). This great capability when integrated with video analysis freeware such as Tracker offers in-depth exploration for physical phenomena such as collisions that occur in a very short duration of time. This article discusses one such usage in…
Descriptors: Handheld Devices, Telecommunications, Video Technology, Computer Software
Kodejška, C.; Lepil, O.; Sedlácková, H. – Physics Education, 2018
This work deals with the experimental demonstration of coupled oscillators using simple tools in the form of mechanical coupled pendulums, magnetically coupled elastic strings or electromagnetic oscillators. For the evaluation of results the data logger Lab Quest Vernier and video analysis in the Tracker program were used. In the first part of…
Descriptors: Secondary School Science, High School Students, Mechanics (Physics), Motion
Ghanem, Eman; Long, S. Reid; Rodenbusch, Stacia E.; Shear, Ruth I.; Beckham, Josh T.; Procko, Kristen; DePue, Lauren; Stevenson, Keith J.; Robertus, Jon D.; Martin, Stephen; Holliday, Bradley; Jones, Richard A.; Anslyn, Eric V.; Simmons, Sarah L. – Journal of Chemical Education, 2018
Innovative models of teaching through research have broken the long-held paradigm that core chemistry competencies must be taught with predictable, scripted experiments. We describe here five fundamentally different, course-based undergraduate research experiences that integrate faculty research projects, accomplish ACS accreditation objectives,…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Study
Sanchez, Joje Mar P. – Science Education International, 2018
Understanding chemistry requires the interplay of several modes of representations which can be observed in the translational skills of students. This paper investigated the extent of the translational skills of students exposed to conventional lecture method (CLM) and the integrated macro-micro-symbolic approach (IMMSA). Individual interviews…
Descriptors: Chemistry, Science Instruction, Lecture Method, Teaching Methods
Wisman, Raymond F.; Spahn, Gabriel; Forinash, Kyle – Physics Education, 2018
Data collection is a fundamental skill in science education, one that students generally practice in a controlled setting using equipment only available in the classroom laboratory. However, using smartphones with their built-in sensors and often free apps, many fundamental experiments can be performed outside the laboratory. Taking advantage of…
Descriptors: Science Instruction, Science Process Skills, Data Collection, Telecommunications
Eshach, Haim; Kukliansky, Ida – International Journal of Science and Mathematics Education, 2018
The present study uses the intuitive rules theory as a framework to examine whether some of the difficulties in dealing with errors and uncertainties observed among students in the university physics laboratory can stem from their use of intuitive rules. The study also examines the relationship between the use of intuitive rules and laboratory…
Descriptors: Physics, Engineering Education, Error of Measurement, Error Patterns
Hester, Susan D.; Nadler, Michele; Katcher, Jennifer; Elfring, Lisa K.; Dykstra, Emily; Rezende, Lisa F.; Bolger, Molly S. – CBE - Life Sciences Education, 2018
Providing opportunities for science, technology, engineering, and mathematics undergraduates to engage in authentic scientific practices is likely to influence their view of science and may impact their decision to persist through graduation. Laboratory courses provide a natural place to introduce students to scientific practices, but existing…
Descriptors: STEM Education, Inquiry, Science Laboratories, College Science