catalysts

• What does collision theory state?

  Chemical reactions occur when particles collide
• What determines the rate of a chemical reaction?

  The frequency of successful collisions
• What is activation energy?

  The minimum energy for particles to react
• How does a catalyst affect the activation energy?

  It provides a pathway with lower activation energy
• How do catalysts increase the rate of reaction?

  By allowing more particles to collide successfully
• Why are catalysts important in chemistry?

  They allow quick reactions without high temperatures
• What happens to catalysts during a chemical reaction?

  They are not used up and can be reused
• How does the presence of a catalyst affect the energy profile of a reaction?

  It lowers the activation energy barrier