Factors that Affect the Rate of Reaction (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards
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Rate of reaction meaning
Rate of reaction meaning
How fast or slow a chemical reaction occurs
3 main factors affecting reaction rate
3 main factors affecting reaction rate
Temperature, pressure, concentration
2 other factors affecting reaction rate
2 other factors affecting reaction rate
Surface area and catalyst
Collision theory explains rate via
Collision theory explains rate via
Frequency and energy of particle collisions
Increasing temperature effect on rate
Increasing temperature effect on rate
Increases rate - particles have more energy, move faster, collide more often
Increasing pressure effect (gases)
Increasing pressure effect (gases)
Increases rate - particles closer, collide more frequently
Increasing concentration effect
Increasing concentration effect
Increases rate - more particles, more collisions
Solid particles that collide
Solid particles that collide
Only particles on the surface
Increasing surface area effect
Increasing surface area effect
Increases rate - more particles exposed, more collisions
High surface area:volume ratio effect
High surface area:volume ratio effect
More particles available for collisions, speeds up reaction
Surface area:volume ratio formula
Surface area:volume ratio formula
How catalysts speed up reactions
How catalysts speed up reactions
Alternative pathway with lower activation energy
Catalysts consumed in reactions?
Catalysts consumed in reactions?
No, not consumed