rates of reaction

• What does the slope of the graph represent in a chemical reaction?

  The rate of reaction
• If the slope of the graph is steep, what does that indicate about the reaction?

  The reaction is fast
• Why does the slope of the line become less steep over time?

  Fewer reactant molecules are available
• What happens when the slope of the line is zero?

  The reaction has stopped
• what unit is the quantity of product measured in if it is a gas?

  In centimeters cubed
• What are the two ways to measure the rate of a chemical reaction?

  • Quantity of product formed
  • Quantity of reactant used
• How do you calculate the mean rate of a reaction?

  Quantity of product divided by time taken
• rate if chemical reaction depends on…

  1. collision frequency
  2. energy transferred during collision
• how does collision frequency affect rate of reaction

  more successful collisions = faster reaction
• how does energy transferred affect rate of reactions

  particles have to collide with enough energy for a successful collision
• activation energy

  minimum amount of energy needed for particles to react