Rate of Reaction (AQA GCSE Chemistry): Flashcards
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Collision theory definition
Collision theory definition
Theory explaining how conditions affect reaction speed
4 factors affecting reaction speed
4 factors affecting reaction speed
Concentration, temperature, surface area, catalysts
Fraction of collisions that result in reaction
Fraction of collisions that result in reaction
Only a small fraction
1st condition for particles to react
1st condition for particles to react
Reactant particles must collide
2nd condition for particles to react
2nd condition for particles to react
Must have enough energy (activation energy)
Activation energy
Activation energy
Minimum energy needed for a reaction to occur
2 ways to increase reaction rate
2 ways to increase reaction rate
Increase collision frequency or particle energy
Effect of doubling concentration on particle number
Effect of doubling concentration on particle number
Number of particles doubles
Effect of doubling concentration on collisions
Effect of doubling concentration on collisions
Collision frequency doubles
Effect of doubling concentration on rate
Effect of doubling concentration on rate
Rate of reaction doubles
Why higher concentration increases rate
Why higher concentration increases rate
More particles, so more frequent collisions
How reactant particles behave
How reactant particles behave
Constantly moving and colliding with each other