effects of temp on rate

• What should you be able to describe by the end of this video?

  The effect of temperature on reaction rate
• What does collision theory explain?

  It explains reaction rates
• What must happen for a chemical reaction to take place according to collision theory?

  Reacting particles must collide
• What is required for successful collisions in a chemical reaction?

  Collisions must have sufficient energy
• How is the rate of a reaction determined?

  By the frequency of successful collisions
• What does the energy profile of a reaction indicate if the product has less energy than the reactants?

  The reaction is exothermic
• What is the term for the minimum energy required for particles to react?

  Activation energy
• What happens to the energy of particles during a reaction?

  Some particles have more energy than others
• What happens when two low-energy particles collide?

  They cannot overcome the activation energy barrier
• What occurs when two high-energy particles collide?

  They can overcome the activation energy barrier
• How does increasing temperature affect chemical reactions?

  It increases the rate of reactions
• Why does increasing temperature increase the rate of reaction?

  Particles move faster and collide more frequently
• What does a higher temperature mean for the energy of particles?

  Particles have more energy
• What is the relationship between the rate of reaction and temperature?

  The rate of reaction is proportional to temperature
• What are the key concepts related to the effect of temperature on reaction rates?

  • Collision theory explains reaction rates
  • Successful collisions require sufficient energy
  • Rate determined by frequency of successful collisions
  • Activation energy is the minimum energy needed
  • Increasing temperature increases particle energy and movement
  • Higher temperature leads to more frequent and successful collisions
• Where can you find questions on the effect of temperature on reaction rates?

  In the vision workbook