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This two-part lab presents decisions about new research and technology related to energy issues including alternatives, risks, costs, and benefits. In part one, students use Lab-Aids® Molecular Models to build methane, ethanol, and octane molecules then “combust” them with oxygen molecules. “Combusting” the model molecules helps students determine the balanced chemical equations for the combustion reactions and compare the amount of CO2 released when these three fuels are burned. In part two, students use standard bond energies to calculate and compare the amount of energy released during the combustion reactions they modeled in part one. They are then asked to use their data about the energy released and the CO2 produced to choose which fuel they think is better. Enough supplies for 12 groups of two to three students. Grades 6-12.
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