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Catalysts In Action
WHAT IS A CATALYST?
A catalyst is a substance that increases the rate of a chemical reaction without going under any chemical change itself. Only a small amount of catalyst is actually needed to increase the rate of reaction between large amounts of reactants.
Catalysts work by reducing the activation energyneeded for a reaction to take place. In addition, different reactions require different catalysts. For example the reaction between Nitrogen and Hydrogen to make ammonia can be speeded up by including some Iron. The iron is a catalyst that helps to increase the rate of reaction.
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