Unit 1 - Reaction Profiles Flashcards
1
Q
rate of collisions:
addition of a catalyst
A
lowers activation energy:
more successful collisions as catalyst holds reactant molecules at favourable angle for collisions to occur
2
Q
activation energy
A
activation complex minus reactants
3
Q
enthalpy change
A
products minus reactants
4
Q
exothermic reaction
A
reactants > products (negative enthalpy change)
5
Q
endothermic reaction
A
products > reactants (positive enthalpy change)
6
Q
rate of collisions:
increasing temperature
A
increased rate of collision:
more particles have activation energy, so more successful collisions
