Publication Date
| In 2015 | 37 |
| Since 2014 | 335 |
| Since 2011 (last 5 years) | 1137 |
| Since 2006 (last 10 years) | 2371 |
| Since 1996 (last 20 years) | 3708 |
Descriptor
Source
| Journal of Chemical Education | 8904 |
Author
Publication Type
Education Level
Audience
| Practitioners | 1717 |
| Teachers | 1197 |
| Researchers | 161 |
| Students | 101 |
| Administrators | 37 |
| Policymakers | 8 |
| Media Staff | 1 |
Showing 1,021 to 1,035 of 8,904 results
Peer reviewed
Direct linkLavilla, Isela; Costas, Marta; Pena-Pereira, Francisco; Gil, Sandra; Bendicho, Carlos – Journal of Chemical Education, 2011
Ultrasound-assisted extraction (UAE) is introduced to upper-level analytical chemistry students as a simple strategy focused on sample preparation for trace-metal determination in biological tissues. Nickel extraction in seafood samples and quantification by electrothermal atomic absorption spectrometry (ETAAS) are carried out by a team of four…
Descriptors: Undergraduate Students, Biochemistry, College Science, Science Instruction
Arnold, Randy J.; Arndt, Brett; Blaser, Emilia; Blosser, Chris; Caulton, Dana; Chung, Won Sog; Fiorenza, Garrett; Heath, Wyatt; Jacobs, Alex; Kahng, Eunice; Koh, Eun; Le, Thao; Mandla, Kyle; McCory, Chelsey; Newman, Laura; Pithadia, Amit; Reckelhoff, Anna; Rheinhardt, Joseph; Skljarevski, Sonja; Stuart, Jordyn; Taylor, Cassie; Thomas, Scott; Tse, Kyle; Wall, Rachel; Warkentien, Chad – Journal of Chemical Education, 2011
A multivitamin tablet and liquid are analyzed for the elements calcium, magnesium, iron, zinc, copper, and manganese using atomic absorption spectrometry. Linear calibration and standard addition are used for all elements except calcium, allowing for an estimate of the matrix effects encountered for this complex sample. Sample preparation using…
Descriptors: Chemistry, Spectroscopy, Biochemistry, Nutrition
Armenta, Sergio; de la Guardia, Miguel – Journal of Chemical Education, 2011
Green analytical chemistry principles were introduced to undergraduate students in a laboratory experiment focused on determining the mercury concentration in cow and goat milk. In addition to traditional goals, such as accuracy, precision, sensitivity, and limits of detection in method selection and development, attention was paid to the…
Descriptors: Undergraduate Students, Chemistry, Laboratory Experiments, Food
Shaver, Lee Alan; Leung, Sam H.; Puderbaugh, Amy; Angel, Stephen A. – Journal of Chemical Education, 2011
The determination of total phenolics in foods and fruit juices was used successfully as a laboratory experiment in our undergraduate general, organic, and biological (GOB) chemistry course. Two different colorimetric methods were used over three years and comparative student results indicate that a ferrous ammonium sulfate (FAS) indicator…
Descriptors: Chemistry, Laboratory Experiments, Food, Biochemistry
Schaber, Peter M.; Dinan, Frank J.; St. Phillips, Michael; Larson, Renee; Pines, Harvey A.; Larkin, Judith E. – Journal of Chemical Education, 2011
A young, inexperienced Food and Drug Administration (FDA) chemist is asked to distinguish between authentic fresh orange juice and suspected reconstituted orange juice falsely labeled as fresh. In an advanced instrumental analytical chemistry application of this case, inductively coupled plasma (ICP) spectroscopy is used to distinguish between the…
Descriptors: Chemistry, College Science, Case Studies, Public Health
Pinelo, Manuel; Nielsen, Michael K.; Meyer, Anne S. – Journal of Chemical Education, 2011
In a 4-h laboratory exercise, students accomplish a series of enzymatic macerations of apple mash, assess the viscosity of the mash during the maceration, extract the juice by centrifugation, and measure the levels of antioxidant phenols extracted into the juice after different enzyme treatments. The exercise shows the impact of enzyme-catalyzed…
Descriptors: Science Instruction, Science Laboratories, Biochemistry, Data Analysis
Eibisch, Mandy; Fuchs, Beate; Schiller, Jurgen; Sub, Rosmarie; Teuber, Kristin – Journal of Chemical Education, 2011
Matrix-assisted laser desorption and ionization time-of-flight mass spectrometry (MALDI-TOF MS) is increasingly used to investigate the phospholipid (PL) compositions of tissues and body fluids, often without previous separation of the total mixture into the individual PL classes. Therefore, the questions of whether all PL classes are detectable…
Descriptors: Chemistry, Lasers, Laboratory Experiments, Science Experiments
Sims, Paul A.; O'Mealey, Gary B.; Khan, Nabeel A.; Larabee, Chelsea M. – Journal of Chemical Education, 2011
A design for a simple and inexpensive gradient maker is described. The gradient maker is assembled by (i) cutting the tops off two plastic bottles of differing diameters to produce two cylinders with intact bottoms; (ii) drilling a small hole toward the bottom of the smaller diameter cylinder and plugging the hole with a size 00 cork stopper; and…
Descriptors: Undergraduate Students, Biochemistry, College Science, Science Instruction
Meissner, Barbara; Bogner, Franz – Journal of Chemical Education, 2011
Although teachers in principle are prepared to make use of science centers, such excursions often fail to facilitate learning processes. Therefore, it is necessary to improve the link between science centers and schools. The design and evaluation of valuable outreach projects may enhance students' out-of-school science learning. In our study, we…
Descriptors: Foreign Countries, Science Teaching Centers, Grade 5, Grade 8
Putti, Alice – Journal of Chemical Education, 2011
This paper discusses student attitudes and beliefs on using the Science Writing Heuristic (SWH) in an advanced placement (AP) chemistry classroom. During the 2007 school year, the SWH was used in a class of 24 AP chemistry students. Using a Likert-type survey, student attitudes and beliefs on the process were determined. Methods for the study are…
Descriptors: Advanced Placement, Student Attitudes, Heuristics, Chemistry
Stains, Marilyne; Escriu-Sune, Marta; Alverez de Santizo, Myrna Lisseth Molina; Sevian, Hannah – Journal of Chemical Education, 2011
Development of learning progressions has been at the forefront of science education for several years. While understanding students' conceptual development toward "big ideas" in science is extremely valuable for researchers, science teachers can also benefit from assessment tools that diagnose their students' trajectories along the learning…
Descriptors: Content Validity, Predictive Validity, Interrater Reliability, Motion
Cardellini, Liberato – Journal of Chemical Education, 2011
In this interview, Carl Djerassi recalls his first years, from his pleasant childhood, to how he escaped the Nazi persecutions, to his college education in America. He remembers how with his research group he won the race for synthesis of cortisone, and how they then synthesized norethindrone, the active ingredient in oral contraceptives. Djerassi…
Descriptors: Graduate Students, Women Faculty, Scientists, College Faculty
Solano, Danielle M.; Wood, Fred E.; Kurth, Mark J. – Journal of Chemical Education, 2011
A course entitled "Careers in Chemistry" has been developed and implemented in the chemistry curriculum. This seminar-style class exposes students to a full spectrum of career options available to chemists by hosting outside speakers. The workings and logistics of this course and its positive impact on students are described. Survey results…
Descriptors: Careers, Seminars, Chemistry, Science Instruction
Wink, Donald – Journal of Chemical Education, 2011
The film "Lorenzo's Oil" depicts the challenges faced by the parents of a child with adrenoleukodystrophy, a neurological disorder that, they were told, was certainly fatal. The film contains a significant amount of chemistry, including concepts of fatty acid metabolism, enzyme inhibition, and the purification of substances. The film also raises…
Descriptors: Education Majors, Elementary School Science, Elementary School Teachers, Chemistry
Millard, Julie T – Journal of Chemical Education, 2011
The cornerstone of forensic chemistry is that a perpetrator inevitably leaves trace evidence at a crime scene. One important type of evidence is DNA, which has been instrumental in both the implication and exoneration of thousands of suspects in a wide range of crimes. The Combined DNA Index System (CODIS), a network of DNA databases, provides…
Descriptors: Crime, Genetics, Science Instruction, Criminals
