C2 Chemistry - collision theory and factors affect rate of reactions Flashcards Preview

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Flashcards in C2 Chemistry - collision theory and factors affect rate of reactions Deck (9)
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1

what does the collision theory suggest?

the rate of reaction depends on how often and how hard the reacting particles collide with each other

2

what 3 things affect the rate of collisions

higher temperature
higher concentration
larger surface area

3

how does temperature affect the collisions

temp is increased - particles move quicker
they collide more often

4

how does the concentration affect collisions
in a solution

more concentrated - there are more particles of reactant knocking between water molecules
collisions between important particles more likely

5

how does the surface area affect collisions

the particles in the solution will have more area to move therefore colliding frequently

6

what has to happen in order for chemical reactions to happen

the reactant particles must collide

7

how does temperature affect the rate of a reaction?
3

the reactant particles move quickly
more energy
particles collide more often

8

how does concentration affect the rate of reaction?
2

particles become crowded
collide more often

9

how does the surface area affect the rate of reaction?
3

surface area increases
more particles exposed to other reactants
more collisions