Home
Flashcards
Preview
Rate of Reactions
Home
Get App
Take Quiz
Create
Automatically remove your image background. Try it now!
https://remove-image-background.com
What factors affect reaction rates?
Concentration
Temperature
Pressure
Surface area
Catalyst
Light
What 3 things must be present for a reaction to occur?
Reactants must collide effectively
They must have enough activation energy
The molecules must be alligned correctly when colliding
How does concentration affect the rate of reaction?
At high concentration;
There are more reactant particles per unit volume
There's increase frequency of effective collisions
Increased speed of reaction
How does an increased surface area affect the rate of reaction?
More effective collision
More area exposed for reaction to occur
Increased reaction rate
How does temperature affect the rate of reaction?
More of the particles get activation energy
They move faster
Increases the effectiveness of collision
Increased speed of reaction
How does catalyst affect the rate of reaction?
Lower the activation energy so more particles get it. This provides an alternative route or path for the reaction
More effective collision
Increased reaction rate
How does light affect the rate of reaction?
Light energy can initiate or catalyse particular chemical reactions. More of the particles get activation energy
Increased effectiveness of collision
Increased rate of reaction
Author
giavanna14
ID
317625
Card Set
Rate of Reactions
Description
k
Updated
2016-03-20T14:24:06Z
Show Answers
Home
Flashcards
Preview