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Rates of Reaction (Changing experiment conditions (Pressure (Changing the…
Rates of Reaction
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Catalysts
Catalysts are substances that speed up a reaction, but are not used up in the process.
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How do they work?
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Adding a catalyst gives the reaction an alternative and easier way to happen- involving a lower activation energy
Not all collisions result in a reaction happening. Collisions need a minimum amount of energy called activation energy.
Collision theory
Reactions can only happen when particles collide. As the acid particles are used up, the collision rate decreases, and so the reaction slows down.