Reaction Rates Flashcards
1
Q
Activation energy
A
minimum energy required for a reaction to occur
2
Q
Catalyst
A
- substance
- speeds up rate of a reaction
- by providing an alternative route for the reaction
- with lower activation energy
3
Q
Collision frequency
A
number of collisions per second
4
Q
Heterogeneous catalyst
A
- catalyst
- different physical state to the reactants
5
Q
Homogeneous catalyst
A
- catalyst
- same physical state as the reactants
6
Q
Rate of reaction
A
- change in concentration of a reactant or a product
- in a given time e.g. per second
7
Q
Successful collision
A
collision with energy greater than/equal to the activation energy
