zz zz Identify a number of factors that affect the rate of chemical reactions.
Use the collision theory to explain how certain factors influence the rate of a chemical reaction.
Produce and interpret rate of reaction graphs.
A number of factors can influence the rate of a chemical reaction: z z
Temperature.
zz zz zz
Concentration of the reactants. Surface area of the reactants. Adding a catalyst.
Temperature and Rate of Reaction
Learn more about kinetic energy in Physical World 16.1
Temperature has a large effect on the rate of reaction. As heat is added to a reaction, the particles that make up the reactants gain more kinetic energy and move faster.
Particles have more energy at higher temperatures. When these particles collide, they will be more likely to have enough energy to react with each other (activation energy).
Raising the temperature by 10 °C doubles the rate of many reactions. Reaction at 25 °C
