Chemistry Regents Unit 9
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Last updated 8:09 PM on 5/28/25
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9 Terms
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Collision theory
reaction is most likely to occur if particles collide with proper energy and orientation
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At equilibrium, the rate of forward reactions and reverse reactions are ____
the same
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Heat of reaction
PE of the products - PE of the reactants
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Positive heat of reaction
endothermic
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Negative heat of reaction
exothermic
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Catalyst
lowers activation energy
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Entropy
measure of randomness or disorder in a system
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Systems in nature tend towards lower ____ and higher ___
energy, entropy
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Exothermic reactions that result in increased entropy are ______
spontaneous
Note 
Flashcards (150)