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Harakas, George N. – Journal of Chemical Education, 2018
This work describes an effective, low cost method to anodize small aluminum objects. The use of a PVC spacer between the anode and cathode significantly reduces the size of the electrochemical cell and electrolyte required for its operation. Students will explore the physical and chemical properties of aluminum and anodized aluminum. They will…
Descriptors: Chemistry, Metallurgy, Cost Effectiveness, Molecular Structure
Newman, Karla – Journal of Chemical Education, 2018
Almost all commercial quadrupole ICP-MS instruments use collision/reaction cells to either attenuate spectral interferences or shift the analyte of interest to an interference-free "m/z" (e.g., by O addition). A laboratory practical was developed to introduce the students to the basic operating principles of ICP-MS using a hands-on…
Descriptors: Molecular Structure, Spectroscopy, College Science, Laboratory Experiments
Cen, Ling; Ruta, Dymitr; Al Qassem, Lamees Mahmoud Mohd Said; Ng, Jason – IEEE Transactions on Learning Technologies, 2020
Technology-enhanced learning has attracted increasing attention of educational community focused on improvement of traditional classroom learning. Augmented immersive reality (AIR) technologies enhance users' perception of reality by augmenting it with computer-generated components such as audio, video, 2/3-D graphics, GPS data, etc. The AIR…
Descriptors: Educational Technology, Multimedia Materials, Virtual Classrooms, Simulated Environment
Tomba, J. Pablo – Journal of Chemical Education, 2015
The thermodynamic formalism of ideal solutions is developed in most of the textbooks postulating a form for the chemical potential of a generic component, which is adapted from the thermodynamics of ideal gas mixtures. From this basis, the rest of useful thermodynamic properties can be derived straightforwardly without further hypothesis. Although…
Descriptors: Science Instruction, Thermodynamics, College Science, Chemical Engineering
Engstrom, Tyler A.; Johnson, Matthew M.; Eklund, Peter C.; Russin, Timothy J. – Physics Teacher, 2015
The concept of "seeing by feeling" as a way to circumvent limitations on sight is universal on the macroscopic scale--reading Braille, feeling one's way around a dark room, etc. The development of the atomic force microscope (AFM) in 1986 extended this concept to imaging in the nanoscale. While there are classroom demonstrations that use…
Descriptors: Nuclear Physics, Laboratory Equipment, Molecular Structure, Computer Simulation
Chen, Lan; Sun, Hongwei; Lai, Chengming – Journal of Chemical Education, 2015
There are two main difficulties in studying molecular symmetry of dihedral point groups. One is locating the C[subscript 2] axes perpendicular to the C[subscript n] axis, while the other is finding the s[subscript]d planes which pass through the C[subscript n] axis and bisect the angles formed by adjacent C[subscript 2] axes. In this paper, a…
Descriptors: Science Instruction, Chemistry, Molecular Structure, Visual Aids
Cosio, Mario N.; Williamson, Vickie M. – Journal of Science Education and Technology, 2019
The goal of this study was to investigate the timing of online homework completion and its effects on student performance. Data was collected from two large, first-semester general chemistry sections at a southwestern university. Specifically, this study aims to explore the link between when students complete their homework relative to the date…
Descriptors: Homework, Chemistry, Science Instruction, Introductory Courses
Todd, Amber; Kenyon, Lisa – Science Teacher, 2016
When asked about protein, students often mention meat, protein bars, and protein's role in building muscles. Many students are not aware of the most basic function of protein: linking genes and traits. Because of its importance in molecular genetics, protein function is included in the life sciences section of the "Next Generation Science…
Descriptors: Animals, Science Instruction, Physical Characteristics, Physiology
Science Teacher, 2016
Science teachers and mentors continue to be challenged to meet the high expectations of "A Framework for K-12 Science Education" and the "Next Generation Science Standards." Indeed the Framework urges teachers to help learners "[build] progressively more sophisticated explanations of natural phenomena..." while the…
Descriptors: Elementary Secondary Education, Molecular Structure, Ecology, Evolution
Kirby, Cait S.; Kolber, Natalie; Salih Almohaidi, Asmaa M.; Bierwert, Lou Ann; Saunders, Lori; Williams, Steven; Merritt, Robert – Biochemistry and Molecular Biology Education, 2016
An inversion polymorphism of the filamin and emerin genes at the tip of the long arm of the human X-chromosome serves as the basis of an investigative laboratory in which students learn something new about their own genomes. Long, nearly identical inverted repeats flanking the filamin and emerin genes illustrate how repetitive elements can lead to…
Descriptors: Genetics, Molecular Biology, Molecular Structure, College Science
Zemke, Jennifer M.; Franz, Justin – Journal of Chemical Education, 2016
Semiconductor nanoparticles, including cadmium selenide (CdSe) particles, are attractive as light harvesting materials for solar cells. In the undergraduate laboratory, the size-tunable optical and electronic properties can be easily investigated; however, these nanoparticles (NPs) offer another platform for application-based tunability--the NP…
Descriptors: Science Instruction, College Science, Chemistry, Science Laboratories
Rappon, Tim; Sylvestre, Jarrett A.; Rappon, Manit – Journal of Chemical Education, 2016
Flotation as a method of separation is widely researched and is applied in many industries. It has been used to address a wide range of environmental issues including treatment of wastewater, recovery of heavy metals for recycling, extraction of minerals in mining, and so forth. This laboratory attempts to show how such a simple method can be used…
Descriptors: Science Instruction, Laboratory Experiments, Science Experiments, Science Laboratories
Prytz, Kjell – Physics Teacher, 2016
It will be demonstrated how the reflection law may be derived on an atomic basis using the plane wave approximation together with Huygens' principle. The model utilized is based on the electric dipole character of matter originating from its molecular constituents. This approach is not new but has, since it was first introduced by Ewald and Oseen…
Descriptors: Scientific Concepts, Scientific Principles, Molecular Structure, Physics
Abualia, Mohammed; Schroeder, Lianne; Garcia, Megan; Daubenmire, Patrick L.; Wink, Donald J.; Clark, Ginevra A. – Journal of Chemical Education, 2016
An understanding of protein folding relies on a solid foundation of a number of critical chemical concepts, such as molecular structure, intra-/intermolecular interactions, and relating structure to function. Recent reports show that students struggle on all levels to achieve these understandings and use them in meaningful ways. Further, several…
Descriptors: Science Instruction, Science Laboratories, Molecular Structure, College Science
Uyulgan, Melis Arzu; Akkuzu, Nalan – Acta Didactica Napocensia, 2016
The subject of molecular structures is one of the most important and complex subject in chemistry which a majority of the undergraduate students have difficulties to understand its concepts and characteristics correctly. To comprehend the molecular structures and their characteristics the students need to understand related subjects such as Lewis…
Descriptors: Concept Formation, Molecular Structure, Chemistry, College Science