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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.
Gases : IdealGasMolarMass (10 Variations)
A sealed flask contains 3.1 L of a gas at 2.4 atm and 22.7oC. If the density of the gas is 9.7 g/L, what is its molar mass? (You can assume that the gas behaves ideally.)
Now I Get It! JCE offers a wealth of materials for teaching and learning chemistry, including full-text PDFs of every article ever published in the Journal, at its companion Web site, JCE Online. Presented here are some additional JCE resources for placing the cartoons described in the article Drawing Attention with Chemistry Cartoons in a meaningful context. JCE Editorial Staff. J. Chem. Educ.2008, 85, 1360.
Drawing Attention with Chemistry CartoonsHerbert W. Roesky and Dietmar Kennepohl This article focuses on the historic development of the single panel gag cartoon as a reflection of the public's perception of chemistry and a potential vehicle to communicate ideas and connect with students. Roesky, Herbert W.; Kennepohl, Dietmar. J. Chem. Educ.2008, 85, 1355.
Enrichment / Review Materials |
Student-Centered Learning
JCE Resources for Chemistry and SportsErica K. Jacobsen This annotated bibliography collects the best that past issues of JCE have to offer related to the 2008 National Chemistry Week theme, "Having a Ball with Chemistry." Jacobsen, Erica K. J. Chem. Educ.2008, 85, 1331.
The Ideal Gas EquationEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Gases
Deviations from the Ideal Gas LawEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
