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39 MEDIA Films for the Humanities and Sciences American Metro Blvd. Suite 124 Hamilton, NJ P ; F The following media come as videos, or DVDs. Prices on average range from $ Avogadro s Hypothesis The Mole The Mole Concept Ward s Natural Science (800) Moles, Percent Composition, Empirical Formula Video The World of Chemistry Videos Program 11, The Mole Annenberg CPB Project ( The Powers of Ten video goes from galaxy size down to nuclear size. It may help students visualize the size of atoms and the comparison of Avogadro s number in terms of powers of ten. ( Ward s Natural Science ( Gases and How They Combine, A CHEM STUDY film DVD Item Number 195 V 2029; $49.99 Ammonia and hydrogen chloride are combined, measured quantitatively, and found to have a ratio of 1.0. Similarly, simple integer volume ratios are measured for three combinations of gases, including hydrogen and oxygen, nitric oxide and oxygen, and hydrogen and chlorine. These ratios will lead your students to discover Avogadro s Hypothesis. Duration: 22 minutes. National Mole Day Foundation A wealth of ideas on how to celebrate Mole Day- October 23rd. Mole Day commemorates Avogadro's number (6.02 X ) which is the basic measuring unit in chemistry. EQUIPMENT A simple electrolysis apparatus suitable for the electrolysis of water to illustrate the relation of the mole to gas volume is available from laboratory equipment vendors. Flinn Scientific ( sells both Brownlee style (AP9027) and Hoffman electrolysis apparatus (AP5879). 38 The Mole (MOLE)
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45 Kolb, D. (1978). The mole. Journal of Chemical Education, 55, This article is a review of the mole concept. It also describes methods for measuring Avogadro's number. McCullough, T. (1992). Are Moles Really Necessary? Journal of Chemical Education, 69(2), 121. Using balanced equation weights to avoid the use of moles in calculations. Merlo, C. & Turner, K.E. (1993). Applications and Analogies: A Mole of M & M's. Journal ofchemical Education, 70(6), 453. Visualizing the immensity of Avagadro's number. Morrison, P., and Morrison, P. (1987). The ring of truth: An inquiry into how we know what we know. New York, NY: Random House. This book contains pictures from the videotape "The Atom" from the Ring of Truth series by Philip Morrison. Morrison, P., Morrison, P., and the Office of Charles and Ray Eames. (1982). Powers of ten. Redding, CT: Scientific American Library. This book illustrates orders of magnitude from m (larger than our galaxy) to the size of nuclei. It contains pictures taken from the film Powers of Ten: A Film Dealing with the Relative Size of Things in the Universe and the Effect of Adding Another Zero produced in the office of Charles and Ray Eames for IBM in Schwartz, A. T., and Pryde, L. T. Mole poster. Available from Education Division, American Chemical Society, th Street, N.W., Washington, DC Many mole analogies presented in this module are taken from this poster. Slowinski, E. J., Wolsey, W. C., and Masterton, W. L. (1985). Water of hydration. In Chemical principles in the laboratory (4th Ed.) (pp ). New York, NY: Saunders. This is an example of a typical water of hydration experiment. Tocci, S. (1984). How much meat in a hot dog? The Science Teacher, 51(3), 62. A brief description is given of a method for determining the percent fat and percent water in a hot dog. Vogel, D. (1992, November). Atomless Chemistry? The Science Teacher, 59(8), Explanations of some of the fundamentals of chemistry. 44a The Mole (MOLE)
46 References updated by James O. Schreck and Mary Virginia Orna Azcona, R. Furio, C. Guisasola, J. (2002) The Learning and Teaching of the Concepts Amount of Substance and Mole : A Review of the Literature, CHEMISTRY EDUCATION: RESEARCH AND PRACTICE IN EUROPE 3, No. 3, pp The importance of the concepts of 'amount of substance' and 'mole' is supported by the abundance in the last decade of research papers on the problem of the teaching and learning of these concepts. Bindel, T. (2002) Crystal Models Made from Clear Plastic Boxes and Their Use in Determining Avogadro s Number, Journal of Chemical Education, 79, 468. Describes an easy way to make crystal lattice models, and the use of these lattice models in calculating Avogadro s number. Diemente, D. (1998) Demonstrations of the Enormity of Avogadro s Number, Journal of Chemical Education, 75, Uses different calculations to help try to get student s minds around Avogadro s number. Diemente, D. (2000) A Drop in the Ocean, Journal of Chemical Education, 77, A demonstration for the enormity of Avogadro s number showing that there are 170 times as many water molecules in a 100mL beaker as there are beakerfuls of water in the ocean. Gorin, G. (2003) Mole, Mole per Liter, and Molar: A Primer on SI and Related Units for Chemistry Students, Journal of Chemical Education, 80, 103. Discusses the historical background on the terms mole, mole per liter, and molar, and their status with respect to the SI system of measurement. Jensen, W. (2004) The Origin of the Mole Concept, Journal of Chemical Education, 81, This column traces the origins of the mole concept in chemistry. Jensen, W. (2007) How and When Did Avogadro s Name become Associated with Avogadro s Number? Journal of Chemical Education, This column traces the process by which Avogadro s name became associated with Avogadro s number. Leenson, I. (1998) Ernest Rutherford, Avogadro s Number, and Chemical Kinetics, Journal of Chemical Education, 75, 998. Outlines a method using Rutherford s data from in order to determine Avogadro s number. 44b The Mole (MOLE)
47 Powers, Angela. (1999) The Weighty Matter of the Kilogram Standard, ChemMatters, 17, No. 3, The search for standards in measuring, how it is done. Uthe, R. (2002) For Mole Problems, Call Avogadro: , Journal of Chemical Education, 79, Techniques to help students become more familiar with Avogadro s number and mole calculations. Wakeley, D. & de Grys, H. (2000) Developing an Intuitive Approach to Moles, Journal of Chemical Education, 77, Discusses discovery-oriented laboratory exercises for helping students develop an intuitive understanding of moles. 44c The Mole (MOLE)
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