NotesFAQContact Us
Collection
Advanced
Search Tips
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Showing 1 to 15 of 124 results Save | Export
Peer reviewed Peer reviewed
Direct linkDirect link
Anna Laguta – Journal of Chemical Education, 2025
Colloidal stability is one of the most important criteria in the application strategy of colloidal nanoparticles in the continuous phase. The branches include ecology, involving coagulation as a purification method; medicine as nanocarriers; biology as blood coagulation, etc. A chemist versed in these concepts is a high-performing chemist in…
Descriptors: Science Experiments, Laboratory Experiments, Chemistry, Light
Peer reviewed Peer reviewed
Direct linkDirect link
Tsun Hei Yu; Pin-Yuan Lian; Jhih-Yu Lin; Li-Yu Chou; Yan-Ru Chen; Chia-Chi Huang – Journal of Chemical Education, 2024
As a model study for improving undergraduate organic chemistry laboratories with contemporary research concepts and practices, we evaluated a project module aiming at the synthesis of two porphyrin compounds. The module was implemented in a format that differed in several ways from that of a traditional course. It was designed for small student…
Descriptors: Organic Chemistry, Science Instruction, Science Laboratories, Instructional Improvement
Adrian Saura-Sanmartin; Jorge Lopez-Sanchez; Carmen Lopez-Leonardo; Aurelia Pastor; Jose Berna – Journal of Chemical Education, 2023
The synthesis of a [2]rotaxane through three- or five-component coupling reactions has been adapted to an organic chemistry experiment for upper-division students. The experimental procedure addresses the search for the most favorable reaction conditions for the synthesis of the interlocked compound, which is obtained in a yield of up to 71%.…
Descriptors: Scientific Concepts, Organic Chemistry, Science Experiments, Spectroscopy
Peer reviewed Peer reviewed
Direct linkDirect link
Armaghan Shafaei; Hayley Abbiss; Sophie Coutts; Mark Bannister; Janine Bruemmer; Mary C. Boyce – Journal of Chemical Education, 2022
A student experiment that uses QuEChERS (quick, easy, cheap, effective, rugged, and safe) methodology for extraction and HPLC for quantitative determination of tocopherols from seeds and nuts is described here. Chromatographic separation is achieved by using a pentafluorophenyl stationary phase which gives enhanced separation of the tocopherols…
Descriptors: Science Instruction, Science Laboratories, Chemistry, Laboratory Procedures
Peer reviewed Peer reviewed
PDF on ERIC Download full text
Altunova, Nebi; Artun, Hüseyin – Journal of Science Learning, 2020
In this study, the Science Laboratory Applications (SLA) course given in a department of Elementary School Teaching in Turkey was evaluated for effectiveness. A triangulation research design, with mixed methods, was employed based on research data collected via a semi-structured interview form, a Science Experiments Evaluation Rubric (SEER)…
Descriptors: Preservice Teacher Education, Teacher Education Curriculum, Elementary School Science, Science Laboratories
Peer reviewed Peer reviewed
Direct linkDirect link
Ji, Qing; El-Hamdi, Nadia S.; Miljanic´, Ognjen S?. – Journal of Chemical Education, 2014
Esters are volatile and pleasantly smelling compounds, commonly used as food additives. Using Ti(OBu)[subscript 4]-catalyzed acyl exchange, we demonstrate a scent transmutation experiment, in which two fragrant esters swap their acyl and alkoxy substituents and are, during the course of a reactive distillation, quantitatively converted into two…
Descriptors: Science Experiments, Olfactory Perception, Science Instruction, College Science
Peer reviewed Peer reviewed
Direct linkDirect link
Reinking, Jeffrey L.; Waldo, Jennifer T.; Dinsmore, Jannett – Biochemistry and Molecular Biology Education, 2013
This laboratory exercise demonstrates three different analytical forms of the polymerase chain reaction (PCR) that allow students to genotype themselves at four different loci. Here, we present protocols to allow students to a) genotype a non-coding polymorphic Variable Number of Tandem Repeat (VNTR) locus on human chromosome 5 using conventional…
Descriptors: Science Laboratories, Molecular Biology, Genetics, College Science
Peer reviewed Peer reviewed
Direct linkDirect link
Melanson, Michelle; Sood, Abha; Torok, Fanni; Torok, Marianna – Biochemistry and Molecular Biology Education, 2013
An undergraduate laboratory exercise is described to demonstrate the biochemical applications of electron paramagnetic resonance (EPR) spectroscopy. The beta93 cysteine residue of hemoglobin is labeled by the covalent binding of 3-maleimido-proxyl (5-MSL) and 2,2,5,5-tetramethyl-1-oxyl-3-methyl methanethiosulfonate (MTSL), respectively. The excess…
Descriptors: College Science, Science Laboratories, Undergraduate Study, Science Instruction
Peer reviewed Peer reviewed
Direct linkDirect link
Bott, Tina M.; Wan, Hayley – Journal of Chemical Education, 2013
Students sometimes have difficulty grasping the importance of when and how basic distillation techniques, column chromatography, TLC, and basic spectroscopy (IR and NMR) can be used to identify unknown compounds within a mixture. This two-part experiment uses mixtures of pleasant-smelling, readily available terpenoid compounds as unknowns to…
Descriptors: Science Instruction, College Science, Undergraduate Study, Organic Chemistry
Peer reviewed Peer reviewed
Direct linkDirect link
Wolyniak, Michael J. – Biochemistry and Molecular Biology Education, 2013
A study of modern genetics requires students to successfully unite the principles of Mendelian genetics with the functions of DNA. Traditional means of teaching genetics are often successful in teaching Mendelian and molecular ideas but not in allowing students to see how the two subjects relate. The laboratory module presented here attempts to…
Descriptors: Science Instruction, College Science, Secondary School Science, High Schools
Peer reviewed Peer reviewed
Direct linkDirect link
Cartrette, David P.; Miller, Matthew L. – Journal of Chemical Education, 2013
An innovative first- and second-year laboratory course sequence is described. The goal of the instructional model is to introduce chemistry and biochemistry majors to the process of research participation earlier in their academic training. To achieve that goal, the instructional model incorporates significant hands-on experiences with chemical…
Descriptors: Science Laboratories, College Science, Chemistry, Biochemistry
Peer reviewed Peer reviewed
Direct linkDirect link
Shultz, Jeffry – Journal of Science Education and Technology, 2009
I present a laboratory procedure for illustrating transcription, post-transcriptional modification, gene conservation, and comparative genetics for use in undergraduate biology education. Students are individually assigned genes in a targeted biochemical pathway, for which they design and test polymerase chain reaction (PCR) primers. In this…
Descriptors: Laboratory Procedures, Genetics, Biology, Science Instruction
Peer reviewed Peer reviewed
Direct linkDirect link
Mehl, Andrew F.; Crawford, Mary A.; Zhang, Lei – Journal of Chemical Education, 2009
Few laboratory procedures describe the use of circular dichroism (CD) at the undergraduate level. To increase the number of laboratory exercises using CD, a thermal denaturation study of myoglobin using CD is described to assess protein stability. Values obtained from a more classic linear data analysis approach are consistent with data analyzed…
Descriptors: Laboratory Procedures, Data Analysis, Science Experiments, Spectroscopy
Peer reviewed Peer reviewed
Direct linkDirect link
Latimer, Devin – Journal of Chemical Education, 2007
Preparation of phenylmagnesium bromide described by Eckert, addition of three equivalents of Grignard reagent to diethyl carbonate to form triphenylmethanol and a series of GC-MS procedures that form intermediates. The analysis is consistent with a gas chromatogram and mass spectrum for each of the expected intermediates and final product of the…
Descriptors: Chemistry, Laboratory Experiments, Science Experiments, Organic Chemistry
Peer reviewed Peer reviewed
Direct linkDirect link
Carvalho-Knighton, Kathleen M.; Keen-Rocha, Linda – Journal of Chemical Education, 2007
The effectiveness of two different laboratory techniques is compared to teach students majoring in science in a general chemistry laboratory. The results demonstrated that student laboratory activities with computer-interface systems could improve student understanding.
Descriptors: Chemistry, Computer Assisted Instruction, College Science, Science Instruction
Previous Page | Next Page »
Pages: 1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9