C6 - Collision Theory

Question 1

What determines reaction rate?

Answer 1

How often and how hard particles collide.

Question 2

How does surface area affect reaction rate ?

Answer 2

Greater surface areas can be achieved by breaking up a solid. This increases the area the particles can cover, increasing the collision rate. Soluble painkillers dissolve faster in this way.

Question 3

How does temperature affect collisions?

Answer 3

Increasing temperature causes particles to move faster and collisions occur more frequently. Particles have more energy for collisions to make the reaction happen.

Question 4

How do catalysts affect reaction rate?

Answer 4

This is a sticky later which allows reactants to stick and bump into each other without changing the catalyst, increasing reaction rate.

Question 5

How does concentration affect reaction rate?

Answer 5

This increases the amounts of reactions in the same volume of a solvent, increasing collision rate.