effect of conc / pressure

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

  They are rapid initially, then slow down
• What does collision theory state?

  Reactions occur when particles collide with energy
• How does the frequency of successful collisions affect reaction rates?

  Higher frequency increases the reaction rate
• Why do reactions slow down over time?

  Reactant molecules are running out
• What happens when all reactant molecules have run out?

  The reaction stops completely
• What is the effect of concentration on reaction rate?

  Higher concentration increases the rate of reaction
• If one container has twice the number of particles, what happens to the reaction rate?

  The reaction rate doubles
• How does the number of collisions per second relate to reaction rate?

  More collisions per second increase the rate
• What does a steeper line on a product graph indicate?

  A faster reaction rate