Upon completion of this lesson, you should be able to:

  • explain using collision theory how temperature, concentration/pressure, surface area, and nature of reactants affect the rate of a reaction.
  • describe the effect of a catalyst on the rate of a reaction.
  • draw and label a one-step potential energy diagram to show the effect of a catalyst on the reaction.


Use a notepad, word processor or html editor to prepare responses to these items. Be prepared to share your answers with your teacher and/or your classmates.

  • Define molar concentration.
  • List the symbols used to communicate molar concentration.
  • What is a Kelvin? How do you convert from degrees Celsius to Kelvin and vice versa?
  • What burns faster: a 2 kg birch log or 2 kg of birch kindling?
  • Think about the trip to and from school. Let's say your home and your school are at about the same elevation, but that in order to get from home to school you have to walk a road that goes over a huge hill. There's a path from your house to the school that goes around the hill instead of over it, but this path involves taking more steps. Which route do you take to school? Why?