A catalyst changes (usually speeding it up) the rate of a chemical reaction.
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What happens to the catalyst in a chemical reaction?
A catalyst is not used up in a chemical reaction. The catalyst is left at the end of the reaction and so it can be used over and over again.
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Why are different catalysts used?
Different catalysts are needed for different reactions. Catalysts often work with only one type of reaction and so different reactions need different catalysts.
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How do catalysts speed up reactions?
Catalysts that speed up reactions lower the activation energy of the reaction so that more of the collisions result in a reaction.
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How are catalysts that are solids used to make them as effective as possible?
In forms that have large surface areas.
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Why can catalysts be used over and over again?
They remain at the end of a reaction/they are not used up in the reaction.
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Why do different reactions need different catalysts?
Catalysts often work with only one type of reaction.
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Other cards in this set
Card 2
Front
What happens to the catalyst in a chemical reaction?
Back
A catalyst is not used up in a chemical reaction. The catalyst is left at the end of the reaction and so it can be used over and over again.
Card 3
Front
Why are different catalysts used?
Back
Card 4
Front
How do catalysts speed up reactions?
Back
Card 5
Front
How are catalysts that are solids used to make them as effective as possible?
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