Collision Theory & Activation Energy (AQA GCSE Chemistry Combined Science): Flashcards
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Collision Theory
Collision Theory
Theory that particles must collide for a reaction to occur
Requirements for successful collision
Requirements for successful collision
Enough energy & right direction
Successful collision
Successful collision
Collision with enough energy to break bonds & form new products
Rate of reaction depends on
Rate of reaction depends on
Frequency of successful collisions
More frequent successful collisions lead to
More frequent successful collisions lead to
Faster reaction
Activation energy
Activation energy
Min. energy needed for particles to react successfully
Activation energy described as
Activation energy described as
Energy barrier that must be overcome
Particles without enough energy
Particles without enough energy
Bounce off without reacting
Low activation energy reactions
Low activation energy reactions
Faster - more particles have enough energy
High activation energy reactions
High activation energy reactions
Slower - fewer particles overcome barrier