6.1.4 Catalysts

• Define the term catalyst 


  A substance that increases the rate of a reaction without being used up itself
• How does a catalyst work?

  Provides an alternative pathway with lower activation energy
• True or false: Catalysts are written as part of a chemical equation

  False
• True or false: Only small amounts of a catalyst are needed in a reaction

  True, because they arent used up
• How can you show that a chemical is a catalyst?

  • Weigh catalyst before reaction
  • Weigh catalyst after reaction
  • Mass should remain the same
• Which letter represents the activation energy when using a catalyst?

  C