Rate: pressure, surface area (AQA GCSE Chemistry): Flashcards
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Effect of surface area to volume ratio on reaction rate
Effect of surface area to volume ratio on reaction rate
Faster reaction (more surface exposed for collisions)
Reaction rate when solid broken into smaller pieces
Reaction rate when solid broken into smaller pieces
Reaction goes faster
Why increased surface area makes reactions faster
Why increased surface area makes reactions faster
More surface exposed, more collisions occur
Powdered medicine vs tablets: reaction speed
Powdered medicine vs tablets: reaction speed
Powdered reacts faster than tablets
Type of reaction affected by pressure changes
Type of reaction affected by pressure changes
Gas reactions
Effect of increased pressure on gas molecules
Effect of increased pressure on gas molecules
Molecules pushed closer together
Effect of increased pressure on collision frequency
Effect of increased pressure on collision frequency
Collisions happen more frequently
Effect of doubling pressure on reaction rate
Effect of doubling pressure on reaction rate
Often doubles the reaction rate
Smaller vs larger marble chips reaction speed
Smaller vs larger marble chips reaction speed
Smaller chips react faster at start
Total gas produced: small vs large marble chips
Total gas produced: small vs large marble chips
Both produce same total gas eventually
Effect of 3× more gas molecules in same space
Effect of 3× more gas molecules in same space
Reaction roughly 3× faster
What affects reaction rate for solids
What affects reaction rate for solids
Surface area
What affects reaction rate for gases
What affects reaction rate for gases
Pressure