Collision theory Flashcards
1
Q
What are the four factors that rate of reaction depends on
A
- Temperature
- concentration
- size of the particles
- pressure for gasses
2
Q
how does increasing temperature increase rate of reaction
A
- when temperature is increased
- particles gain more energy and move faster
- resulting in more frequent successful collisions
3
Q
how does increasing concentration increase rate of reaction
A
- concentrated means there are more particles of reactants in the same volume
- so the particle s are close together
- this increases the chance of more frequent successful collisions
- therefor increasing the rate of reaction
4
Q
how does increasing pressure increase the rate of reaction
A
- by increasing pressure
- the particles are more crowded
- this means there will be more frequent successful collisions
- therefore increasing rate of reaction
5
Q
how does increasing surface are increase the rate of reaction
A
- by breaking a sold into pieces
- it increases its surface area to volume ratio
- more of the solid is exposed to the reactant resulting in more successful frequents collisions
6
Q
what is activation energy
A
- activation energy is the minimum amount of energy needed for a reaction to start
