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Exploding Soap Bubbles: Hydrogen + Oxygen A series of three videos shows that as the ratio of oxygen to hydrogen in soap bubbles increases, the explosions that occur when the bubbles are ignited get louder. (The fact that with an excess of oxygen the explosions would become softer again is not shown.) Each video is repeated with no voice-over so that only the sounds of the explosions are heard. Five still images are provided to show the stoichiometry on the molecular scale. The videos are intended to be shown in order beginning with Hydrogen Alone and ending with hydrogen plus more oxygen.
Applications of Reaction RateKevin Cunningham This article presents an assignment in which students are to research and report on a chemical reaction whose increased or decreased rate is of practical importance. The assignment is designed to develop and assess a number of valuable skills and understandings, including the ability to write effectively. Cunningham, Kevin. J. Chem. Educ.2007, 84, 430.
Catalysis |
Enzymes |
Kinetics |
Rate Law |
Reactions |
Applications of Chemistry
An Enzyme Kinetics Experiment Using Laccase for General Chemistry Yaqi Lin and Patrick M. Lloyd This article describes the use of laccase, an oxidoreductase enzyme, to study the effects of enzyme catalysts on reaction rates. Lin, Yaqi; Lloyd, Patrick M. J. Chem. Educ.2006, 83, 638.
Aldehydes / Ketones |
Bioanalytical Chemistry |
Catalysis |
Enzymes |
Kinetics |
UV-Vis Spectroscopy
A Modified Demonstration of the Catalytic Decomposition of Hydrogen PeroxideCarlos Alexander Trujillo A safer and cheaper version of the popular catalyzed decomposition of hydrogen peroxide demonstration commonly called the Elephants Toothpaste is presented. Hydrogen peroxide is decomposed in the presence of a surfactant by the enzyme catalase producing foam. Catalase has a higher activity compared with the traditional iodide and permits the use of diluted hydrogen peroxide solutions. The demonstration can be made with household products with similar amazing effects. Trujillo, Carlos Alexander. J. Chem. Educ.2005, 82, 855.
ACS Scholars Program ACS awards renewable scholarships to underrepresented minority students who want to enter the fields of chemistry or chemistry-related fields. Awards of up to $5,000 are given to qualified applicants based on academic standing, financial need, career objective, leadership skills, and involvement in school activities and community service
Student / Career Counseling |
Minorities in Chemistry
College Planning This Web page lists resources to help make an informed decision about studying a chemical science.
Student / Career Counseling
Find ACS-Approved Programs This Web page lists resources to help make an informed decision about studying a chemical science.
Chemistry in Context, 6th Ed.Lucy Pryde Eubanks, Catherine H. Middlecamp, Carl E. Heltzel, Steven W. Keller Finds ChemEd DL resources related to the sections of the General Chemistry textbook, Chemistry in Context, 6th Ed., by Lucy Pryde Eubanks, Catherine H. Middlecamp, Carl E. Heltzel, Steven W. Keller published by McGraw-Hill, 2009.
General Chemistry, 9th EditionDarrell D. Ebbing, Steven D. Gammon Finds ChemEd DL resources related to the sections of the General Chemistry textbook, General Chemistry, 9th Edition, by Darrell D. Ebbing, Steven D. Gammon published by Houghton Mifflin Company, 2007.
Issues and Physical ScienceSEPUP Finds ChemEd DL resources related to the sections of the Physical Science textbook, Issues and Physical Science, by SEPUP published by LAB-AIDS, Inc., 2007.