Collision theory

• What does the rate of a reaction depend on?

  Temperature, concentration, and particle size
• Why do these settings affect the reaction rate?

  They influence how often particles collide
• What is the collisional theory of reaction rates?

  • Reaction rates depend on collision frequency
  • More successful collisions lead to faster reactions
  • Energy transferred during collisions is crucial
• What is the collisional frequency?

  How often reacting particles collide
• What happens to reaction rates with more successful collisions?

  They increase the reaction rate
• What is the minimum energy needed for particles to react called?

  Activation energy
• What is the significance of activation energy in reactions?

  Particles must exceed it to react
• How does temperature affect particle movement?

  Higher temperature increases particle movement
• What happens to reaction rates when temperature increases?

  They generally increase due to faster movement
• What is the effect of higher temperatures on collisions?

  More frequent and energetic collisions occur
• How does increased energy of collisions affect reactions?

  It leads to more successful reactions
• What is the relationship between temperature and energy of collisions?

  Higher temperature increases energy of collisions
• What is the effect of increasing the number of collisions?

  It increases the rate of reaction
• What happens to reaction rates if the number of collisions increases?

  They happen more quickly
• What factors lead to an increased rate of reaction?

  1. Increased temperature
  2. Higher concentration of reactants
  3. Smaller particle size
  4. More collisions
• What is the effect of higher concentrations on reaction rates?

  They increase the rate of reaction
• Why do higher concentrations lead to faster reactions?

  More particles lead to more collisions
• What is the effect of particle size on reaction rates?

  Smaller particles increase the reaction rate
• Why do smaller particles react faster?

  They have a larger surface area for collisions
• How does the number of successful collisions relate to reaction rates?

  More successful collisions lead to faster rates
• What are the key factors affecting reaction rates?

  • Temperature
  • Concentration
  • Particle size
  • Collision frequency
• What happens to reaction rates at higher temperatures?

  They increase due to faster particle movement
• What is the relationship between temperature and energy of collisions?

  Higher temperature increases energy of collisions
• How do increased collisions affect the rate of reaction?

  They lead to faster reactions
• What is the effect of increased energy on reaction rates?

  It increases the likelihood of successful reactions
• Why do reactions happen more quickly with more collisions?

  More collisions increase the chance of reactions
• What is the significance of activation energy in reactions?

  It determines if particles will react
• What is the relationship between temperature and reaction rates?

  Higher temperatures lead to faster reaction rates
• How does increasing the number of collisions affect reaction rates?

  It increases the rate of reaction
• What happens to reaction rates if the energy of collisions increases?

  They increase due to more successful reactions
• What are the factors that lead to an increased rate of reaction?

  • Increased temperature
  • Higher concentration
  • Smaller particle size
  • More collisions
• Why does energy of the collisions increase?

  Because the particles are moving faster
• When do reactions occur in relation to particle collisions?

  Reactions happen with sufficient energy collisions
• What happens at higher temperatures regarding collisions?

  More successful collisions occur at higher temperatures
• How does increasing temperature affect reaction rates?

  It increases the rate of reaction
• What does increasing concentration do to reaction rates?

  It increases the rate of reaction
• What does a more concentrated solution imply about particles?

  There are more reactant particles in the same volume
• How does increasing concentration affect collision frequency?

  It increases the frequency of collisions
• What happens to reaction rates with smaller solid particles?

  They increase due to larger surface area
• How does breaking a solid into smaller pieces affect its surface area?

  It increases the surface area available for reactions