Rates of reaction

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What four factors affect rates of reaction
temperature, concentration, surface area and a catalyst
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What do chemical reactions depend on
successful collisions of the reactants
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How does a high temperature increase the rate of reaction
The patricles have more kinetic energy so there will be a higher frequency of successful collisions
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How does an increased surface area increase the rate of reaction
There are more particles exposed at one time so a higher frequency of successful collisions
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How does the concentration effect the rate of reaction
The higher the concentration the more particles there are so a higher frequency of successful collisions
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How does a catalyst speed up the rate of reaction
It puts the particles under more pressure to collide so a higher frequency of successful collisions
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What does a catalytic converter do
Converts harmful gases in a car to cleaner gases like carbon dioxide and water vapour
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When does a catalytic converter work best
When it is hot and has a large surface area
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Card 2

Front

What do chemical reactions depend on

Back

successful collisions of the reactants

Card 3

Front

How does a high temperature increase the rate of reaction

Back

Preview of the front of card 3

Card 4

Front

How does an increased surface area increase the rate of reaction

Back

Preview of the front of card 4

Card 5

Front

How does the concentration effect the rate of reaction

Back

Preview of the front of card 5
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