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Showing 661 to 675 of 1,734 results Save | Export
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Williams, Travis J.; Kershaw, Allan D.; Li, Vincent; Wu, Xinping – Journal of Chemical Education, 2011
A convenient laboratory experiment is described in which NMR magnetization transfer by inversion recovery is used to measure the kinetics and thermochemistry of amide bond rotation. The experiment utilizes Varian spectrometers with the VNMRJ 2.3 software, but can be easily adapted to any NMR platform. The procedures and sample data sets in this…
Descriptors: Kinetics, Laboratory Experiments, Science Instruction, Magnets
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De Luca, Roberto; Ganci, Salvatore – Physics Education, 2011
The Cartesian diver experiment certainly occupies a place of honour in old physics textbooks as a vivid demonstration of Archimedes' buoyancy. The original experiment, as described in old textbooks, shows Archimedes buoyancy qualitatively: when the increased weight of the diver is not counterbalanced by Archimedes' buoyancy, the diver sinks. When…
Descriptors: Textbooks, Physics, Science Instruction, Science Education
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Priest, Marie A.; Padgett, Lea W.; Padgett, Clifford W. – Journal of Chemical Education, 2011
A method for the construction of a Galilean thermometer out of common chemistry glassware is described. Students in a first-semester physical chemistry (thermodynamics) class can construct the Galilean thermometer as an investigation of the thermal expansivity of liquids and the temperature dependence of density. This is an excellent first…
Descriptors: Physics, Chemistry, Thermodynamics, Climate
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Cartier, Stephen F. – Journal of Chemical Education, 2011
A statistical model has been developed and applied to interpret thermodynamic processes typically presented from the macroscopic, classical perspective. Through this model, students learn and apply the concepts of statistical mechanics, quantum mechanics, and classical thermodynamics in the analysis of the (i) constant volume heating, (ii)…
Descriptors: Thermodynamics, Quantum Mechanics, Heat, Scientific Concepts
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González-Fernández, María Jesús; Sáiz-Manzanares, María Consuelo; Alaoui, Fatima E. M.; Aguilar, Fernando; Meneses, Jesús; Montero, Eduardo – Journal of Technology and Science Education, 2013
The learning and development of teamwork skill is only possible if its achievement is a self-building process of the student. In turn, the teachers must become guides in the process of a learning which is not limited only to the topic of their own course, but which must be imbedded with a good dose of this skill. Promotion of teamwork is not…
Descriptors: Self Management, Teamwork, Active Learning, Learning Strategies
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Liberatore, Matthew W.; Vestal, Charles R.; Herring, Andrew M. – Advances in Engineering Education, 2012
YouTube Fridays devotes a small fraction of class time to student-selected videos related to the course topic, e.g., thermodynamics. The students then write and solve a homework-like problem based on the events in the video. Three recent pilots involving over 300 students have developed a database of videos and questions that reinforce important…
Descriptors: Social Networks, Video Technology, Teaching Methods, Engineering Education
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Bauer, Jurica; Tomisic, Vladislav; Vrkljan, Petar B. A. – Journal of Chemical Education, 2012
A laboratory exercise has recently been reported in which the students use the initial rates method based on the clock reaction approach to deduce the rate law and propose a reaction mechanism for the oxidation of iodide by iron(III) ions. The same approach is used in the exercise proposed herein; the students determine the dependence of the…
Descriptors: Science Instruction, Chemistry, Kinetics, Secondary School Science
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Davies, Stephen – School Science Review, 2012
Earth science has a part to play in broadening students' learning experience in physics. The Earth Science Education Unit presents a range of (free) workshops to teachers and trainee teachers, suggesting how Earth-based science activities, which show how we understand and use the planet we live on, can easily be slotted into normal science…
Descriptors: Learning Activities, Heat, Teaching Methods, Earth Science
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Thompson, Frank – Physics Education, 2010
One of the basic truths regarding energy conversion is that no thermodynamic cycle can be devised that is more efficient than a Carnot cycle operating between the same temperature limits. The efficiency of the Stirling cycle (patented by Rev. Robert Stirling in 1816) can approach that of the Carnot cycle and yet has not had the commercial success…
Descriptors: Physics, Engines, Science Instruction, Heat
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Olmsted, John, III – Journal of Chemical Education, 2010
Temperature and entropy traditionally are expressed in units of kelvin and joule/kelvin. These units obscure some important aspects of the natures of these thermodynamic quantities. Defining a rescaled temperature using the Boltzmann constant, T' = k[subscript B]T, expresses temperature in energy units, thereby emphasizing the close relationship…
Descriptors: Science Instruction, Scientific Principles, Heat, Energy
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Molki, Arman – Science Education Review, 2010
In this article we propose a simple and low-cost experimental set-up through which science educators can demonstrate the Seebeck effect using a thermocouple and an instrumentation amplifier. The experiment can be set up and conducted during a 1-hour laboratory session. (Contains 3 tables and 3 figures.)
Descriptors: Science Experiments, Science Instruction, Science Laboratories, Laboratory Equipment
Fedotov, Alex; Farah, Shadia; Farley, Daithi; Ghani, Naureen; Kuo, Emmy; Aponte, Cecielo; Abrescia, Leo; Kwan, Laiyee; Khan, Ussamah; Khizner, Felix; Yam, Anthony; Sakeeb, Khan; Grey, Daniel; Anika, Zarin; Issa, Fouad; Boussayoud, Chayama; Abdeldayem, Mahmoud; Zhang, Alvin; Chen, Kelin; Chan, Kameron Chuen; Roytman, Viktor; Yee, Michael – NCSSSMST Journal, 2010
This article describes the projects on solar hydrogen powered vehicles using water as fuel conducted by teams at Brooklyn Technical High School. Their investigations into the pure and applied chemical thermodynamics of hydrogen fuel cells and bio-inspired devices have been consolidated in a new and emerging sub-discipline that they define as solar…
Descriptors: Fuels, Thermodynamics, Sampling, Chemistry
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Anacleto, Joaquim; Ferreira, J. M. – European Journal of Physics, 2011
This study addresses a controversial issue in the adiabatic piston problem, namely that of the piston being adiabatic when it is fixed but no longer so when it can move freely. It is shown that this apparent contradiction arises from the usual definition of adiabatic condition. The issue is addressed here by requiring the adiabatic condition to be…
Descriptors: Science Instruction, College Science, Physics, Motion
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Ortuno, M.; Marquez, A.; Gallego, S.; Neipp, C.; Belendez, A. – European Journal of Physics, 2011
An experimental apparatus was designed and built to allow students to carry out heat conduction experiments in hollow cylinders made of different materials, as well as to determine the thermal conductivity of these materials. The evolution of the temperature difference between the inner and outer walls of the cylinder as a function of time is…
Descriptors: Physics, Science Instruction, Heat, Thermodynamics
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Franzen, Stefan – Journal of Chemical Education, 2011
Determination of the solubility limit of a strongly colored organometallic reagent in a mixed-solvent system provides an example of quantitative solubility measurement appropriate to understand polymer, nanoparticle, and other macromolecular aggregation processes. The specific example chosen involves a solution of tris(dibenzylideneacetone)…
Descriptors: Science Laboratories, Laboratory Experiments, Science Instruction, Chemistry
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