Chapter 5: Kinetics

Question 1

Describe a Boltzmann curve and explain the effect of increasing temperature

Answer 1

Question 2

Describe collision theory

Answer 2

For a reaction to occur, particles need to collide with enough energy to break bonds. To increase the number of succesful collisions, we can

• Increase temperature (more kinetic energy in each collision and more frequent collisions)
• Increase concentrations (more particles in given volume, so more frequent collisions)

Question 3

A succesful collision…

Answer 3

… is one where the collision has energy greater than the activation energy

Question 4

Endothermic reaction

Answer 4

Takes in heat from surroundings (gets colder)

Question 5

Exothermic reaction

Answer 5

gives out heat to the surroundings (gets hotter)

Question 6

A catalyst

Answer 6

Speeds up a reaction by providing an alternative pathway with a lower activation energy