Effect of Temperature, Concentration, and Pressure on Reaction Rates — AQA GCSE Combined Science: Synergy 8465
AQA GCSE Combined Science: Synergy · 8465
Effect of Temperature, Concentration, and Pressure on Reaction Rates
What you need to know
Explain the effects of changes in temperature, concentration, and pressure on rates of reaction in terms of the frequency and energy of particle collisions.
Define activation energy as the minimum amount of energy that reacting particles must have to collide and react according to collision theory.
Explain that increasing the concentration of solutions, the pressure of reacting gases, or the surface area of solid reactants increases the frequency of collisions and the reaction rate.
Explain that increasing the temperature increases both the frequency of collisions and the energy of the particles, leading to a higher reaction rate.
Predict and explain the effects of changing conditions on the rate of a reaction.
Investigate how changes in concentration affect reaction rates by measuring gas volume production or observing colour and turbidity changes.
