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Download full textGodfrey, Kelly E.; Beard, Jonathan J. – College Board, 2016
The purpose of this study was to address Advanced Placement (AP)® policy-related questions from administrators at the University System of Georgia (USG) using current AP Exam records and student course performance at four institutions. Specifically, comparisons of sequent or subsequent course grades were made between AP and non-AP students. This…
Descriptors: Advanced Placement Programs, Student Placement, School Policy, State Universities
Peer reviewed
Direct linkVera, Francisco; Rivera, Rodrigo; Nunez, Cesar – Science & Education, 2011
The experiment in which a candle is burned inside an inverted vessel partially immersed in water has a history of more than 2,200 years, but even nowadays it is common that students and teachers relate the change in volume of the enclosed air to its oxygen content. Contrary to what many people think, Lavoisier concluded that any change in volume…
Descriptors: Science Experiments, Science History, Chemistry, 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
Mbindyo, Jeremiah K. N.; Anna, Laura J.; Fell, B. Andrew; Patton, David A. – Journal of Chemical Education, 2011
A silver mirror can be deposited on many types of surfaces from the reduction of the silver-diammine complex by a reducing sugar as proposed by Kemp in this "Journal". Three extensions of Kemp's demonstration that highlight the role of SnCl[subscript 2] sensitizer in the deposition of a silver mirror on surfaces are presented. The demonstration…
Descriptors: Audience Participation, Chemistry, Science Instruction, Scientific Concepts
Mohamadou, Aminou; Ple, Karen; Haudrechy, Arnaud – Journal of Chemical Education, 2011
Complexes with tridentate ligands of the type [M(A-B-C)2], where A [not equal to] B [not equal to] C and with an imposed bonding sequence A-B-C, require special attention to draw all possible stereoisomers. Depending on the nature of the central donor atom B of the tridentate ligand, an easy drawing method is presented that shows seven chiral…
Descriptors: Chemistry, Equal Education, Science Instruction, Molecular Structure
Segurado, Manuel A. P.; Silva, Margarida F. B.; Castro, Rita – International Journal of Mathematical Education in Science and Technology, 2011
The mathematical language and its tools are complementary to the formalism in chemistry, in particular at an advanced level. It is thus crucial, for its understanding, that students acquire a solid knowledge in Calculus and that they know how to apply it. The frequent occurrence of indeterminate forms in multiple areas, particularly in Physical…
Descriptors: Mathematics, Chemistry, Calculus, Models
Goodwin, Alan – School Science Review, 2011
Electrochemistry is a difficult subject for students at school and beyond and even for their teachers. This article explores the difficult "truth" that, when a current flows from a galvanic cell, positive ions within the cell electrolyte move towards the electrode labelled positive. This seems to contravene the basic rule that like charges repel…
Descriptors: Chemistry, Cytology, Science Instruction, Teaching Methods
Peckham, Gavin D.; McNaught, Ian J. – Journal of Chemical Education, 2011
Electrochemical cell potentials have no simple relationship with temperature but depend on the interplay between the sign and magnitude of the isothermal temperature coefficient, dE[degrees]/dT, and on the magnitude of the reaction quotient, Q. The variations in possible responses of standard and non-standard cell potentials to changes in the…
Descriptors: College Science, Molecular Structure, Misconceptions, Science Instruction
Philipse, Albert P. – Journal of Chemical Education, 2011
Though heterogeneous nucleation of liquid droplets on a smooth surface (such as a bathroom mirror) is a classical topic in nucleation theory, it is not well-known that this topic is actually a pedagogical example of heterogeneous catalysis: the one and only effect of the surface is to lower the activation Gibbs energy of droplet formation. In…
Descriptors: Chemistry, Water, Scientific Concepts, Thermodynamics
Ilich, Predrag-Peter; McCormick, Kathleen R.; Atkins, Adam D.; Mell, Geoffrey J.; Flaherty, Timothy J.; Bruck, Martin J.; Goodrich, Heather A.; Hefel, Aaron L.; Juranic, Nenad; Seleem, Suzanne – Journal of Chemical Education, 2010
A novel experiment is described in which solvated electrons in liquid ammonia reduce a benzyl alcohol carbon without affecting the aromatic ring. The reductive activity of solvated electrons can be partially or completely quenched through the addition of electron scavengers to the reaction mixture. The effectiveness of these scavengers was found…
Descriptors: Chemistry, Organic Chemistry, Biochemistry, Science Experiments
Vaughan, Pamela P.; Cochran, Michael; Haubrich, Nicole – Journal of Chemical Education, 2010
An experiment exploring the photochemical properties of quinones was developed. Their unique photochemistry and highly reactive nature make them an ideal class of compounds for examining structure-activity relationships. For several substituted quinones, photochemical reactivity was related to structure and ultimately to the Gibbs energy for…
Descriptors: Chemistry, Laboratory Experiments, Science Experiments, Inorganic Chemistry
Jensen, William B. – Journal of Chemical Education, 2010
In response to a reader query, this article traces the history of fusible alloys, including Newton's metal, D'Arcet's metal, Rose's metal, Onion's fusible alloy, and Wood's metal. (Contains 1 table and 1 figure.)
Descriptors: Science History, Chemistry, Metallurgy
Demirdogen, Betul; Cakmakci, Gultekin – Chemistry Education Research and Practice, 2014
This study investigates Turkish students' (age 15 or older) interest in chemistry by analysing 1027 of their self-generated chemistry-related questions, which had been submitted to a popular science magazine. These questions were classified based on the field of interest, the cognitive level of the question, and the stimulating impetus for asking…
Descriptors: Student Interests, Chemistry, Secondary School Students, Secondary School Science
Teo, Tang Wee; Goh, Mei Ting; Yeo, Leck Wee – Chemistry Education Research and Practice, 2014
This paper presents findings from a content analysis of 650 empirical chemistry education research papers published in two top-tiered chemistry education journals "Chemistry Education Research and Practice" and "Journal of Chemical Education," and four top-tiered science education journals "International Journal of Science…
Descriptors: Journal Articles, Chemistry, Science Education, Trend Analysis
Bakker, Arthur; Groenveld, Djonie; Wijers, Monica; Akkerman, Sanne F.; Gravemeijer, Koeno P. E. – Educational Studies in Mathematics, 2014
Based on insights into the nature of vocational mathematical knowledge, we designed a computer tool with which students in laboratory schools at senior secondary vocational school level could develop a better proficiency in the proportional reasoning involved in dilution. We did so because we had identified computations of concentrations of…
Descriptors: Vocational Education, Intervention, Secondary School Students, Laboratory Schools
