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Rates of Reaction
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| Submitted: Sun Dec 15 2002
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September 2002 Rates of Reaction The "rate" of a reaction is how fast a chemical reaction happens. Many things can effect the rate of reaction, catalysts, the surface area of a solid in the reaction, temperature and concentration. A catalyst is a substance, which makes the chemical reaction faster, and at the end of the reaction it still has the same chemical form. If you add a catalyst to a reaction it lowers the activation energy, which is the energy required to start a reaction, so therefore the catalyst has made it easier for the particles to react, therefore increasing the rate of the reaction. If you increase the surface area of a solid in the reaction, the reaction speeds up. This is because of the collision theory. The collision theory states that "The more collisions between particles in a given time, the faster the reaction". (Chemistry for You, by...
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