AP®︎ Chemistry: Topic 5.4 Flashcards

Master key terms and definitions for Topic 5.4 of AP Chemistry – Elementary Reactions to help you prep for quizzes and the AP exam.

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Term

Elementary Reaction

Definition

A reaction that occurs in a single step through one molecular collision event.

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Elementary Reaction
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A reaction that occurs in a single step through one molecular collision event.

5.4.A5.4.A.1
Termolecular Reactions Are Rare
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Three-particle simultaneous collisions are uncommon because exact same-time, same-place encounters are unlikely.

5.4.A5.4.A.2
Elementary Reaction Rate Laws
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For a single-step reaction, reactant coefficients become exponents in the rate law.

5.4.A5.4.A.1
Molecularity
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The number of reactant particles in an elementary step, such as uni-, bi-, or termolecular.

5.4.A