Contents
Computer Chip Thermochemistry: How Can We Create an Integrated Circuit from Sand?
Melonie A. Teichert, Angelica M. Stacy, Alice C. Rico, Susan E. Kegley, Jennifer G. Loeser, Marco Molinaro, and Susan E. Walden
ISBN 0-393-15410-6
The fabrication of integrated circuits on silicon-based semiconductors is used to introduce students to the rapidly growing industry of semiconductor processing. Enthalpy, entropy, and Gibbs free energy are introduced sequentially as the various fabrication steps are considered.
What’s in a Star?
Melissa Kido, Susan E. Kegley, Greg Bothun, and Geoffrey W. Marcy
ISBN 0-393-15414-9
The only empirical information we have about stars comes from the light that reaches us. Students explore the nature of starlight in order to relate its color to blackbody radiation and temperature. They then analyze stellar spectra in terms of the electronic structure of atoms and ions.
Build a Better CD Player: How Can You Get Blue Light from a Solid?
George C. Lisensky, Herbert Beall, Arthur B. Ellis, Dean J. Campbell, and Joanne Stewart
ISBN 0-393-15412-2
This module challenges students to think about a question in materials design—how to get light out of a solid. Light-emitting solids are essential for many high technology materials and products, including compact disc (CD) players. Students make use of the periodic table to propose color-specific emitting solids based on knowledge of periodic properties, bonding, electronic transitions, solid structures, and the properties of light.
What Should We Do about Global Warming?
Sharon Anthony, Thomas W. Brauch, and Elizabeth J. Longley
ISBN 0-393-15415-7
Groups of students analyze the historical data on several atmospheric greenhouse gases and attempt to account for the increasing concentrations of these gases by finding their source and sink reactions. Students then design an international global warming policy based on scientific data, but also taking into consideration environmental, social, political, and economic realities.
Why Does the Ozone Hole Form?
Tricia Ferrett and Sharon Anthony
ISBN 0-393-15413-0
Students learn about the structure of the atmosphere and the oxygen chemistry responsible for producing the ozone layer. Rowland and Molina’s two-step chlorine-catalyzed cycle, the unique Antarctic meteorology, and heterogeneous chemistry complete the story of Antarctic ozone depletion. Using chemical kinetics in a real context is emphasized through rate concepts and calculations that answer relevant questions about ozone. Students also learn to support or refute a scientific hypothesis with evidence and to consider the interplay between experimental data and theoretical models.
Would You Like Fries with That? The Fuss about Fat in Our Diet
Sandra Laursen and Heather Mernitz
ISBN 0-393-15411-4
Fat is an important nutrient in our diets, but some dietary fats have been linked to an increased risk of chronic diseases. Students investigate the properties of fats and oils and relate them to their triglyceride structure, gaining experience with chemical notation, polarity, thermochemistry, intermolecular forces, bond strength, cis/trans isomerism, and basic organic nomenclature. Finally, in looking at some of the fat substitutes on the market, they both justify their properties from a chemical perspective and debate their effectiveness as a part of the American diet.
Water Treatment: How Can We Make Our Water Safe to Drink?
Susan E. Kegley, Doug Landfear, David Jenkins, Ben Gross, and Kome Shomglin
ISBN 0-393-92646-X
Students begin by learning about the hydrologic cycle and the various pathways by which dissolved substances get into a water supply. The process of dissolution is then examined in some detail, with a focus on learning about the nature of ionic and covalent substances and the factors that control their water solubility. The latter half of the module introduces the concepts of equilibrium and Le Chatelier’s principle and uses the context of removing contaminants from a water supply to teach students about solubility and acid-base equilibria.
Soil Equilibria: What Happens to Acid Rain?
George C. Lisensky, Roxanne Hulet, Michael Beug, and Sharon Anthony
ISBN 0-393-15386-X
This module, for use in an analytical chemistry course, considers the consequences when soil equilibria are stressed through the addition of combustion-generated sulfur and nitrogen oxides to the environment. Students consider the chemical species important in the soil system charge balance; how changes in pH, solubility, and ion exchange affect ion distributions and concentrations; and how both chemical systems and ecosystems respond. Instead of many simple problems where individual equilibria are studied separately, students question and investigate facets of a more complex problem through laboratory measurements of model and natural systems, supplemented by case studies.
How Could Life Have Arisen on Earth?
Paul G. Jasien, Stanley L. Miller, Matthew Levy, and Jason Dworkin
ISBN 0-393-92436-X
Major events in the origin and evolution of life are examined from a chemical perspective, including the formation of the solar system, the first reproducing molecules, the evolution of metabolism, and the search for extraterrestrial life.
Should We Build a Copper Mine?
Mary Walczak, Linda Zarzana, Doug Williams, and Paul Charlesworth
ISBN 0-393-92647-8
Copper: what is its source, and what does it cost? Does it matter how we produce it? What are the environmental consequences? In this module students explore the science behind these questions and develop informed answers. Case teaching, collaborative laboratory work, and classroom group problems are used to teach redox reactions, acid/base reactions, solubility, and electrochemical equilibria. Teams of students perform their own analysis and hydro-metallurgical processing of an ore sample.
How Do We Get from Bonds to Bags, Bottles, and Backpacks?
Karen Harding and Sharon Anthony
ISBN 0-393-92439-4
This module is designed to help students learn about chemical bonding, polarity, intermolecular forces, and the impact of chemical structure on the properties of materials by focusing on polymers. As they learn about the chemistry of polymers, they also learn how it overlaps with other disciplines and areas of life, including materials science and recycling.
How Can We Reduce Air Pollution from Automobiles?
Howard Drossman, Wayne Tikkanen, and Sandra Laursen
ISBN 0-393-92438-6
In burning fuel, automobiles emit compounds that are hazardous and that react in air to degrade air quality. As they analyze how different fuels combust in a car engine, students explore how an automobile engine works, how pollution is produced by an engine, and how engine conditions affect pollution, fuel economy, and engine efficiency, using key chemistry concepts about thermochemistry and gas-phase equilibria.
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