Collision Theory and Chemical Kinetics
Chemical Kinetics is the study of the speed or RATE of a reaction. COLLISION THEORY helps us explain why molecules react and helps us understand how we can affect those reactions.
LEGOⓇ Analogy
A good analogy for this is LEGOSⓇ . If I want to put two LEGOSⓇ together, the LEGOSⓇ have to make contact, or COLLIDE! I have to make sure the LEGOSⓇ collide in the correction direction (or ORIENTATION). Finally, I have to make sure to put the LEGOSⓇ together with enough ENERGY so they stay stuck together! |
Speeding up a Reaction
We can speed up a reaction by affecting one of the three parts of Collision Theory
The 4 ways to speed up a reaction (increase reaction rate) are:
1. Increase the TEMPERATURE - this will increase the ENERGY collisions have and increase the reaction rate.
2. Increase the CONCENTRATION OF REACTANTS - this will increase the number of collisions and increase the reaction rate.
3. Increase the SURFACE AREA of the reactants - this will increase the number of collisions and increase the reaction rate.
4. Add a CATALYST - this will help the reactants get into the correct orientation and LOWER THE ENERGY needed for the reaction.
We can speed up a reaction by affecting one of the three parts of Collision Theory
The 4 ways to speed up a reaction (increase reaction rate) are:
1. Increase the TEMPERATURE - this will increase the ENERGY collisions have and increase the reaction rate.
2. Increase the CONCENTRATION OF REACTANTS - this will increase the number of collisions and increase the reaction rate.
3. Increase the SURFACE AREA of the reactants - this will increase the number of collisions and increase the reaction rate.
4. Add a CATALYST - this will help the reactants get into the correct orientation and LOWER THE ENERGY needed for the reaction.