Catalysts

• What is the effect of catalysts on chemical reactions?

  They increase the rate of reactions
• What is collision theory?

  Reactions occur when particles collide with energy
• What determines the rate of a chemical reaction?

  The frequency of successful collisions
• What is activation energy?

  The minimum energy needed for particles to react
• How do catalysts affect the activation energy of a reaction?

  They provide a pathway with lower activation energy
• Why are catalysts important in chemistry?

  They allow reactions to occur quickly and economically
• Can catalysts be reused after a reaction?

  Yes, they are not used up
• How do catalysts increase the rate of reaction?

  By allowing more particles to collide successfully
• Are catalysts included in the chemical equation for a reaction?

  No, they are not included
• Do different reactions require different catalysts?

  Yes, different reactions need different catalysts
• What role do enzymes play in living organisms?

  They act as catalysts
• What is the relationship between catalysts and activation energy in a chemical reaction?

  • Catalysts lower the activation energy
  • More particles can successfully collide
  • Increases the rate of the reaction
• What are the key points about catalysts that need to be learned?

  • Catalysts increase reaction rates
  • Not used up in reactions
  • Not included in chemical equations
  • Different reactions need different catalysts
  • Enzymes are biological catalysts