4.6.1.3 COLLISION THEORY Flashcards
this topic comes up every year, so it's important to know it (7 cards)
what does collision theory explain?
Collision theory explains how various factors affect rates of reactions.
what is the collision theory?
- chemical reactions can occur only when reacting particles collide with each other and with sufficient energy. The minimum amount of energy that particles
must have to react is called the activation energy.
what is activation energy?
The minimum amount of energy that particles
must have to react.
what does increasing the concentration of reactants in solution, the pressure of reacting gases, or the surface area of solid reactants do?
it increases the frequency of collisions and so increases the rate of reaction
what does increasing the temperature do?
Increasing the temperature increases the frequency of collisions and makes the collisions more energetic, and so increases the rate of reaction.
what is needed for a chemical reaction to take place?
- reactant particles must collide with each other
- the particles must have enough energy for them to react
what is it called when a collision produces a reaction?
a successful collision
