Sponsor Utama
National Science Foundation
The O'Donnell Foundation is devoted to building model programs to enhance the quality of education.
Reaksi dan Tingkatannya
Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?
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Lihat Di Bawah
Bahan-bahan Pengajaran
Topik Utama
- Reaksi
- Kinematik
- Konsentrasi
- Kesetimbangan
Contoh Tujuan Pengajaran
- Explain why and how a pinball shooter can be used to help understand ideas about reactions.
- Describe on a microscopic level what contributes to a successful reaction (with illustrations).
- Describe how the reaction coordinate can be used to predict whether a reaction will proceed or slow.
- Use the potential energy diagram to determine: The activation energy for the forward and reverse reactions; The difference in energy between reactants and products; The relative potential energies of the molecules at different positions on a reaction coordinate.
- Draw a potential energy diagram from the energies of reactants and products and activation energy.
- Sketch how the number of reactants and products will change as a reaction proceeds.
- Explain how they know that a system has reached equilibrium from a graph of number of reactants and products versus time.
- Predict how raising or lowering the temperature will affect a system in the equilibrium position.
- Describe the relative sizes of the forward and reverse rates at equilibrium.
- Explain what effects whether the equilibrium position favors the products or the reactants.
- Predict how addition of a reactant or product will affect the forward and reverse reaction rates, and once this new system reaches equilibrium how the reactant and product concentrations will compare to the original system at equilibrium.
- Compare graphs of concentration vs. time to determine which represents the fastest or slowest rate.
Tip Untuk Para Guru
Panduan Bagi Guru (pdf) memuat petunjuk / tip yang dibuat oleh Tim PhET.
Ide-ide Pengajaran
Anda dapat mengirimkan ide dan aktifitas anda pribadi.
Versi Terjemahan :
Software Yang Diperlukan
| Windows | Macintosh | Linux |
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Microsoft Windows
XP/Vista/7 Sun Java 1.5.0_15 or later |
OS 10.5 or later
Sun Java 1.5.0_19 or later |
Sun Java 1.5.0_15 or later |
Kredit
| Tim Perancang | Librari Pihak Ketiga | Terimakasih Kepada |
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