A5069117697- Various Chemistry Research Topics
- Photochemistry and Electron Transfer Studies
- Advanced Chemical Physics Studies
- Innovative Teaching Methods
- Science Education and Pedagogy
- Spectroscopy and Laser Applications
- Problem and Project Based Learning
- Catalysis and Oxidation Reactions
- Spectroscopy and Quantum Chemical Studies
- Quantum, superfluid, helium dynamics
- Molecular spectroscopy and chirality
- Molecular Junctions and Nanostructures
- Mass Spectrometry Techniques and Applications
- Visual and Cognitive Learning Processes
- History and advancements in chemistry
- Inorganic and Organometallic Chemistry
- Occupational Health and Performance
- Inorganic Fluorides and Related Compounds
- Atmospheric Ozone and Climate
- Experimental Learning in Engineering
- Diverse Educational Innovations Studies
- Combustion and flame dynamics
- Radiative Heat Transfer Studies
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Educational Innovations and Technology
California State Polytechnic University
2004-2023
Pomona College
2020
University of California, Davis
2004
University of Redlands
1989-2003
Rice University
1982-1986
University of California, Irvine
1983
How can you switch from a hands-on face-to-face chemistry course to an online in the face of pandemic? It is possible have students do experiments at home. There are many readily available kitchen, drug store, and garden chemicals that be used illustrate same principles standard curricula multiple levels. One example using milk magnesia, magnesium hydroxide, as base which happens built-in end titration indicator because it begins suspension. Despite lack laboratory equipment, there other...
Declaration of the COVID-19 pandemic by World Health Organization in 2020 forced many schools to switch emergency virtual instruction. This situation provided an opportunity explore effectiveness online learning from students’ perspectives. To discover best practices for learning, 584 STEM students at California State Polytechnic University Pomona (Cal Poly Pomona) were surveyed about their Spring and Fall experiences. Some obstacles faced adapting a new lifestyle, feeling disconnected,...
Relaxation processes in pyridine vapor have been studied using high-performance transient absorption spectrometry following excitation low the S1 manifold. The ultraviolet spectrum of lowest triplet state has identified and measured, its dependence on delay time background pressure investigated for a variety collision partners. It is concluded that formation through → T1 intersystem crossing proceeds statistical limit. Subsequent radiationless decay population was found to show unusual...
The collapse of the World Trade Center (WTC) buildings #2 (South Tower), #1 (North and #7 created an enormous pile which emitted intense plumes acrid smoke dust until roughly mid-December, when last spontaneous surface fire occurred. We collected particles by size (8 modes, ≈12 to 0.09 micrometers diameter) time (typical resolution 1 3 h) from October 2 late December at EML 201 Varick Street site 1.8 km NNE 50 m above ground level. Here we show some 70,000 mass elemental data period through...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Analysis of Seawater: A Laboratory-Centered Learning Project in General ChemistryJodye I. Selco , Julian L. Roberts Jr., and Daniel B. Wacks View Author Information Chemistry Department, University Redlands, CA 92373Cite this: J. Chem. Educ. 2003, 80, 1, 54Publication Date (Web):January 2003Publication History Received3 August 2009Published online1 January 2003Published inissue 1...
A hands-on, minds-on inquiry chemistry experiment was developed for use in K–12 schools that enables students to combine the chemicals of their choice and observe results. The involved is water based builds upon acid–base, double displacement, iodometric detection starch reactions. Chemicals readily available supermarket are mixed zippered bags thus reducing risks, cost, lead time preparation. In this experiment, experience a variety indicators chemical change including changes texture,...
Understanding how the periodic table of elements is organized and to read information from it fundamental for understanding chemistry. Introductory chemistry courses usually include discussions detailing what elemental can be determined by virtue its position on table. Although many people have been exposed these ideas, they still do not understand organized. This article describes new discovery-based lessons that enable students explore organization learn embedded within it. method guides...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolution photochemistry of azuleneJ. I. Selco, T. Brooks, M. Chang, Trieu, J. K. McDonald, and S. P. McManusCite this: Org. Chem. 1994, 59, 2, 429–433Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 January 1994https://doi.org/10.1021/jo00081a024Request reuse permissionsArticle Views655Altmetric-Citations14LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article...
A flexible apparatus has been constructed to measure the spectra and time dependence of weak optically induced absorption changes in gas phase samples. The instrument uses a pulsed Nd:YAG-pumped dye laser for excitation second, independent YAG/dye probing coaxial counter-propagating geometry. wavelength, probe delay between two pulses may be separately varied. An on-line laboratory computer acquires absorbance data as function wavelength delay, helps suppress ratiometric noise point that...
Students perceive molecular bonding as an abstract concept; therefore, learning this concept seems uninteresting and difficult. A strategically designed object (LO), such in the form of a simulation, can be used to help students acquire accurate mental images build appropriate schema addition providing concrete experience encouraging knowledge construction. This paper presents evaluation design development Making Molecules simulation through students' perceptions previous version...
Nonradiative relaxation processes of pyridazine’s S1 origin level have been investigated using several varieties gas phase time-resolved spectroscopy. Measurements ground state repopulation kinetics under vibrationally relaxing conditions showed rapid and nearly complete return thermalized S0, implying a quantum yield for → S0 internal conversion at least 0.95. The room temperature photochemical was found to be higher in the low pressure than solution by factor 600. From these results...
Transient absorption near 311 nm in pyridine was studied at room temperature. (AIP)
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The concept of chemical bonding is abstract and perceived as difficult. While it a fundamental required to comprehend other chemistry topics, the learning outcomes are not always attained. Addressing this issue, our challenge was create intervention regarding common, for students in variety undergraduate courses. We envisioned product that invites students’ interest yet challenging. This design case discusses process, literature informs decisions, strategies incorporated into object entitled...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMother Earth Chemistry: A Laboratory Course for NonmajorsJ. L. Roberts , J. I. Selco and D. B. Wacks View Author Information University of Redlands, 1200 East Colton Avenue, PO Box 3080, CA 92373-0999Cite this: Chem. Educ. 1996, 73, 8, 779Publication Date (Web):August 1, 1996Publication History Received3 August 2009Published online1 1996Published inissue 1...
In “Science Education: A Societal Imperative,” Paul H. Taylor references a society shaped by scientific concepts and technological forces, the need for citizens to make informed decisions about how science technology are used in society, important it is students be scientifically literate order our technology. It now more critical than ever that equitable education reach all so they can these since even affected use of was 1978.
One of the major problems in trying to understand chemistry is that while we can observe macroscopic changes occur during a chemical reaction with our own senses, many people these processes appear be magic. Understanding what happens at atomic level (termed microscopic) much more difficult since cannot observed even microscopes (so better term might nanoscopic). Most texts present symbolic representations (such as H2O) which are often misunderstood by novice chemists. To gain true...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSaving a Drug Poisoning Victim: A Kinetics SimulationJodye I. Selco and Janet Beery View Author Information Department of Chemistry, University Redlands, CA 92373-0999 Mathematics, 92373-0999Cite this: J. Chem. Educ. 2002, 79, 5, 578Publication Date (Web):May 1, 2002Publication History Received3 August 2009Published online1 May 2002Published inissue 1 2002https://pubs.acs.org/doi/10.1021/ed079p578https://doi.org/10.1021/ed079p578research-articleACS...