Can Varying Concentration, Surface Area, and Temperature Prevent a Reaction?

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Varying concentration, surface area, and temperature can influence reaction rates by affecting the frequency and energy of collisions between reactants. Lowering concentration or reducing surface area can decrease the likelihood of collisions, potentially preventing a reaction. Temperature plays a critical role, as higher temperatures generally increase reaction rates, while lower temperatures can slow or halt reactions. Catalysts are substances that speed up reactions by lowering the activation energy, and they do not prevent reactions; rather, they facilitate them. Understanding these concepts is essential for grasping the dynamics of chemical reactions.
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I'm really having trouble with this question, can someone help me with an explanation?

Is it possible to vary the factors of concentration, surface area, and temperature in a way that would prevent a reaction from happening? explain your answers in terms of collisions.

Will catalysts always speed up reactions?


thanks in advance
 
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First have you read your textbook? What ARE "concentration" and "surface area" and what do they have to do with reactions? What is the definition of "catalyst"?
 

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