Difference between revisions of "Catalyst"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
| − | A [[catalyst]] is a [[chemical]] which can increase the rate of a [[Chemical Reaction|chemical reaction]] without being used up in the [[reaction]]. | + | A [[catalyst]] is a [[chemical]] which can increase the [[Rate of Reaction|rate]] of a [[Chemical Reaction|chemical reaction]] without being used up in the [[reaction]]. |
===About Catalysts=== | ===About Catalysts=== | ||
| − | : A [[catalyst]] is neither are [[reactant]] | + | : A [[catalyst]] is neither are [[reactant]] nor a [[product]] in a [[Chemical Reaction|reaction]] but it can make the [[Chemical Reaction|reaction]] happen more quickly. |
===Examples=== | ===Examples=== | ||
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: [[Manganese Dioxide]] is a [[catalyst]] that speeds up the break down of [[Hydrogen Peroxide]] into [[Water]] and [[Oxygen]]. | : [[Manganese Dioxide]] is a [[catalyst]] that speeds up the break down of [[Hydrogen Peroxide]] into [[Water]] and [[Oxygen]]. | ||
: [[Enzyme]]s are a type of biological [[catalyst]] that can speed up [[Chemical Reaction|reaction]] inside an [[organism]]. | : [[Enzyme]]s are a type of biological [[catalyst]] that can speed up [[Chemical Reaction|reaction]] inside an [[organism]]. | ||
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| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | A [[catalyst]] is a [[chemical]] which can increase the [[Rate of Reaction|rate of reaction]] and lower the [[Activation Energy|activation energy]] for a particular [[Chemical Reaction|reaction]]. | ||
| + | |||
| + | ===About Catalysts=== | ||
Revision as of 13:57, 16 January 2019
Contents
Key Stage 3
Meaning
A catalyst is a chemical which can increase the rate of a chemical reaction without being used up in the reaction.
About Catalysts
- A catalyst is neither are reactant nor a product in a reaction but it can make the reaction happen more quickly.
Examples
- Chlorophyll is a catalyst for the reaction that allows plants to turn Carbon Dioxide and Water into Glucose and Oxygen during photosynthesis.
- Manganese Dioxide is a catalyst that speeds up the break down of Hydrogen Peroxide into Water and Oxygen.
- Enzymes are a type of biological catalyst that can speed up reaction inside an organism.
Key Stage 4
Meaning
A catalyst is a chemical which can increase the rate of reaction and lower the activation energy for a particular reaction.