Rate: pressure, surface area (AQA GCSE Chemistry Combined Science): Flashcards
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14 cards from this deck
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Practise the cards
14 cards from this deck
Breaking solid into smaller pieces effect on SA:V
Breaking solid into smaller pieces effect on SA:V
Increases SA:V ratio
Smaller solid pieces & reaction rate
Smaller solid pieces & reaction rate
Faster reaction
Why smaller pieces react faster
Why smaller pieces react faster
More surface area for collisions
Powder vs lump reaction speed
Powder vs lump reaction speed
Powder reacts much faster
Type of reaction affected by pressure
Type of reaction affected by pressure
Gas reactions
Low pressure effect on reaction rate
Low pressure effect on reaction rate
Slower rate, fewer collisions
High pressure effect on reaction rate
High pressure effect on reaction rate
Faster rate, more collisions
Doubling pressure effect on collision frequency
Doubling pressure effect on collision frequency
Doubles collision frequency
Doubling pressure effect on reaction rate
Doubling pressure effect on reaction rate
Doubles reaction rate
Pressure ? reaction rate
Pressure ? reaction rate
Collision frequency
Small vs large marble chips with acid
Small vs large marble chips with acid
Small chips produce gas faster
3x gas molecules in same volume effect
3x gas molecules in same volume effect
3x collisions, faster reaction
Theory explaining SA & pressure effects on rate
Theory explaining SA & pressure effects on rate
Collision theory
Graph: smaller vs larger pieces
Graph: smaller vs larger pieces
Steeper curve for smaller pieces