How Catalysts Affect Rate Of Reaction - GCSE Chemistry | kayscience.com

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Catalysts are chemical substances which speed up chemical reactions without being affected or used up. Catalysts lower the activation energy of the reacting particles by providing an alternative reaction pathway. Catalysts cause a higher percentage of particles to have more energy than the activation energy, increasing the chance of more successful collisions. Catalysts do not affect the volume or mass of product formed. Catalysts do not increase the frequency of collisions and they do not give the reacting particles more energy.
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