Rate: temperature (AQA GCSE Chemistry): Flashcards
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Collision theory
Collision theory
Explains why temperature changes reaction rate
Energy needed for successful collision
Energy needed for successful collision
Particles must collide with enough energy
Orientation needed for successful collision
Orientation needed for successful collision
Particles must hit in the right way
Higher temp effect on particle speed
Higher temp effect on particle speed
Particles move faster
Higher temp effect on collision frequency
Higher temp effect on collision frequency
More collisions per second
Activation energy
Activation energy
Minimum energy needed to start a reaction
Why higher temp increases rate
Why higher temp increases rate
More particles have enough energy to react
Proportion of successful collisions at higher temp
Proportion of successful collisions at higher temp
Higher proportion are successful
products
products
Equipment to measure hydrogen gas volume
Equipment to measure hydrogen gas volume
Gas syringe
Why wear goggles when using acids
Why wear goggles when using acids
Acid is corrosive
Why keep hydrogen from naked flames
Why keep hydrogen from naked flames
Hydrogen is flammable
Effect of heating acid on reaction rate
Effect of heating acid on reaction rate
Increases rate