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Name __________________________________ Period _______ Phet simulation: Reactions and Rates Instructions: Go to http://tinyurl.com/phetrate Click run now Select single collision tab. Click the green + separation view Click the green + energy view Explore the simulation. Manipulate the molecule launched the launcher options raising and lowering the temperature different reactions Answer the following questions: 1. Do all collisions result in a chemical reaction? Explain. ______________________________________________________________________________ ______________________________________________________________________________ 2. Describe the effect of changing the kinetic energy (temperature) of the reactant on the formation of the product. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 3. Describe the effect of changing the angle of collision on the formation of a product. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 4. Describe the relationship between particle motion and the energy vs. reaction coordinate graph. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 5. Describe the relationship between the “total energy” green line and the particle motion. ______________________________________________________________________________ ______________________________________________________________________________ Select the many collisions tab. Click the green + energy view In the Options category, select “bar” Explore the simulation. Manipulate the molecule launched the launcher options raising and lowering the temperature different reactions Answer the following questions: 6. Describe what happens when you add equal amounts of each reactant. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 7. Describe the relationship between temperature and rate of converting reactant to product. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 8. Select 6 particles of each reactant. Add a little heat. Observe. Explain why the “current amounts” values stay pretty much the same? _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________