effect of temp on rate

• What does collision theory explain?

  It explains that chemical reactions occur when reacting particles collide with sufficient energy
• What must happen for a chemical reaction to take place according to collision theory?

  The reacting particles must collide with each other
• What determines the rate of a chemical reaction?

  The frequency of successful collisions
• What does it mean for collisions to have sufficient energy?

  It means the collisions must have enough energy to overcome the activation energy barrier
• What is the activation energy?

  The minimum amount of energy that particles must have to react
• What does an exothermic reaction indicate about the energy of products compared to reactants?

  The products have less energy than the reactants
• How does increasing temperature affect the energy of particles in a reaction?

  It increases the energy of the particles
• What happens to the frequency of collisions when temperature is increased?

  The frequency of collisions increases
• Why do more particles overcome the activation energy barrier at higher temperatures?

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

  The rate of reaction is proportional to the temperature
• What are the key points about the effect of temperature on the rate of a chemical reaction?

  • Increasing temperature increases particle energy
  • Faster particle movement leads to more collisions
  • More collisions result in a higher rate of reaction
  • More particles can overcome activation energy barrier