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01 Notes - Factors Affecting Rate

01 Notes - Factors Affecting Rate - Aim How can we change...

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Aim: How can we change the rate at which a chemical reaction occurs? QQ: None! Do Now: You have granulated sugar and sugar cubes, hot tea and iced tea. Which combination of “reactants” will dissolve fastest? Slowest? Explain your reasoning. Chemical Kinetics Branch of chemistry that is concerned with the rate (speed) at which chemical reactions occur. What must happen between reactant molecules in order for a reaction to occur? COLLISIONS!!!! Collision Theory Effective Collisions: collisions between reactant molecules that produced the desired product Ineffective Collisions: collisions between reactant molecules that do not produce the desired product No reaction Undesired product produced What makes collisions effective? Collisions must occur at the proper speed and orientation… The more collisions, the faster the reaction. How can we control the reaction conditions to affect the number of collisions that occur?
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