Collision Theory

• What happens to the rate of chemical reactions over time?

  • Reactions are rapid initially
  • Over time, reactions slow down
  • Finally, reactions stop
• What is collision theory?

  Collision theory states that chemical reactions can only occur when reacting particles collide with sufficient energy
• What determines the rate of a chemical reaction according to collision theory?

  The frequency of successful collisions
• What does the term 'frequency' refer to in the context of chemical reactions?

  The number of successful collisions per second
• What happens to the reaction when all reactant molecules have run out?

  The reaction stops
• What is the basis of collision theory in chemical reactions?

  Chemical reactions occur when reacting particles collide with sufficient energy
• How is the rate of a chemical reaction determined?

  By the frequency of successful collisions
• What does the term frequency refer to in the context of chemical reactions?

  The number of successful collisions per second