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Peer reviewed
Direct linkWinkelmann, 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
Valente Nabais, J. M.; Costa, Sara D. – Journal of Chemical Education, 2017
This paper reports an experimental activity where students have to carefully analyze the evidence collected at the crime scene, namely fibers and lipstick traces. The fibers are analyzed by infrared spectroscopy, solubility tests, and optical microscopy, while in turn the lipstick traces are investigated by thin layer chromatography. Students also…
Descriptors: Science Instruction, Crime, College Science, Undergraduate Study
Fernández-Calviño, David; Pérez-Rodríguez, Paula; Nóvoa-Muñoz, Juan Carlos; Estévez, Manuel Arias – Journal of Chemical Education, 2017
National legislation concerning soil pollution by heavy metals in different countries is mostly based on the total heavy metal concentration levels allowed in different soils. As soil pollution is an issue of worldwide concern, here we develop a laboratory exercise for students in which they must check the suitability of a total metal…
Descriptors: Chemistry, Science Instruction, Science Laboratories, Metallurgy
Download full textSujak, Kamariah Binti; Daniel, Esther Gnanamalar Sarojini – Malaysian Online Journal of Educational Sciences, 2017
The purpose of this article is to determine the levels of understanding for solving Stoichiometry problems from the aspect of macroscopic, microscopic and symbolic representations of high, average and low achieving students after infusion of metacognitive skills. Nine form four students aged sixteen years old from a secondary school in Kuala…
Descriptors: Foreign Countries, Secondary School Students, Knowledge Level, Statistical Analysis
Danczak, S. M.; Thompson, C. D.; Overton, T. L. – Chemistry Education Research and Practice, 2017
Good critical thinking is important to the development of students and a valued skill in commercial markets and wider society. There has been much discussion regarding the definition of critical thinking and how it is best taught in higher education. This discussion has generally occurred between philosophers, cognitive psychologists and education…
Descriptors: Science Instruction, Critical Thinking, Chemistry, Undergraduate Students
Hensiek, Sarah; DeKorver, Brittland K.; Harwood, Cynthia J.; Fish, Jason; O'Shea, Kevin; Towns, Marcy – Journal of College Science Teaching, 2017
Digital badging is an innovative method of valid, evidence-based assessment that may be used to assess hands-on skills in undergraduate science laboratories, in research laboratories, and in fieldwork. A digital badge contains information about who was awarded the badge, the criteria used, the evidence submitted, the issuer, the date issued, and…
Descriptors: Recognition (Achievement), Evaluation Methods, Academic Achievement, Evidence Based Practice
Zare, Richard N.; Cox, Charles T., Jr.; Murphy, Katherine; Bayas, Camille – Journal of College Science Teaching, 2017
In large, introductory courses, instructors and teaching assistants often struggle to provide detailed feedback on student homework in a timely manner. Here we describe a peer-reviewed homework system that provides quick turnaround while offering flexibility in the construction of homework problems. Homework is administered through a cycle, which…
Descriptors: Homework, Peer Evaluation, Introductory Courses, Problem Solving
Ouasri, Ali – Chemistry Education Research and Practice, 2017
This paper investigates the difficulties that Moroccan pupils (18-19) of the second Baccalaureate year encountered in solving chemical equilibrium problems relating to ethanoate ions' reactivity with water and methanoic acid, and to copper-aluminum cells. The pupils were asked to provide answers to questions derived from two problems. The…
Descriptors: Foreign Countries, Late Adolescents, Chemistry, Science Instruction
Head, M. L.; Yoder, K.; Genton, E.; Sumperl, J. – Chemistry Education Research and Practice, 2017
Chemical representations serve as a cornerstone to guide the teaching of chemistry concepts. The influence that a chemical representation has on instruction is largely dependent on how well the viewer interprets the information in the representation. Teachers serve as a guide to the students as they point out and make connections between the…
Descriptors: Preservice Teachers, Science Teachers, Knowledge Level, Chemistry
Arrabal-Campos, Francisco M.; Cortés-Villena, Alejandro; Fernández, Ignacio – Journal of Chemical Education, 2017
This paper presents a programming project named NMRviewer that allows students to visualize transformed and processed 1 H NMR data in an accessible, interactive format while allowing instructors to incorporate programming content into the chemistry curricula. Using the MATLAB graphical user interface development environment (GUIDE), students can…
Descriptors: Coding, Programming, Undergraduate Study, Undergraduate Students
McCullagh, James V.; Hirakis, Sophia P. – Journal of Chemical Education, 2017
This synthesis of ethyl 6-acetoxyhexanoate (Berryflor) is designed as an experiment for use in a second-year organic chemistry course focusing on the synthesis and reaction of esters. The compound is described as having a raspberry-like odor with jasmine and anise aspects. A two-step procedure for its synthesis beginning with inexpensive…
Descriptors: College Science, Undergraduate Study, Organic Chemistry, Science Experiments
Cruells Cadevall, Montserrat; Roca Vallmajor, Antoni; Escaja Sánchez, Núria; Fernández González, Javier; Garrido Ponce, José Antonio; Giménez Farreras, Jaume; Llauradó Tarragó, Montserrat; Rodriguez Raurell, Laura; Marcos, Josep Oriol Bernad; Arias, Carla Escobar; Vinent, Nuria López; Gratovil, Ma Lluisa Sagristà; Aragay, Carme Navarro – Journal of Technology and Science Education, 2017
In scientific and technical degrees, the opinion of the final employers on the given subjects is really important. For this reason, the Quality Committee (CQ) of the Faculty of Chemistry of the University of Barcelona prepared a survey for chemical, engineering and pharmaceutical companies asking about the academic training required by the…
Descriptors: Foreign Countries, Surveys, Competence, Comparative Analysis
Tavares, Maurício T.; Primi, Marina C.; Silva, Nuno A. T. F.; Carvalho, Camila F.; Cunha, Micael R.; Parise-Filho, Roberto – Journal of Chemical Education, 2017
Teaching the molecular aspects of drug-target interactions and selectivity is not always an easy task. In this context, the use of alternative and engaging approaches could help pharmacy and chemistry students better understand this important topic of medicinal chemistry. Herein a 4 h practical exercise that uses freely available software as a…
Descriptors: Science Instruction, Teaching Methods, Pharmacology, College Science
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
Taylor, Ann T. S.; Olofson, Eric L.; Novak, Walter R. P. – Biochemistry and Molecular Biology Education, 2017
To foster the connection between biochemistry and the supporting prerequisite concepts, a collection of activities that explicitly link general and organic chemistry concepts to biochemistry ideas was written and either assigned as pre-class work or as recitation activities. We assessed student learning gains after using these activities alone, or…
Descriptors: Retention (Psychology), Science Activities, Biochemistry, Organic Chemistry
