Rates of Reaction

• Rate = Change/Time
• Average Rate = Total Change / Time Taken
• The presence of a catalyst can increase the rate of reaction by providing an alternative pathway with lower activation energy for the reaction to occur.
• The concentration of reactants plays a significant role in determining the rate of reaction as higher concentrations lead to more frequent collisions between particles.
• Temperature is a crucial factor that influences the rate of a chemical reaction by affecting the kinetic energy of the particles involved.
• An increase in concentration leads to more frequent successful collisions between molecules, resulting in faster reactions.
• Temperature affects the kinetic energy of molecules, which increases their frequency of collision and therefore the likelihood of successful reactions occurring.
• Surface area refers to the amount of material exposed to other substances, affecting the number of possible collisions that could result in chemical reactions.
• Pressure is not directly related to the rate of reaction but may indirectly affect it through changes in temperature or volume.
• Enzymes are biological catalysts found in living organisms that facilitate biochemical reactions within cells.