Warch the video and answer the questions on the companion sheet.
A catalyst provides an alternative reaction pathway that has a lower activation energy than the uncatalysed reaction. This does not change the rate of collisions. However, it does increase the rate of successful collisions because a greater proportion of collisions now exceeds this lower activation energy.
The effect of a catalyst on the activation energy is shown on a chart called a reaction profile. This shows how the energy of the reactants and products change during a reaction
Link this back to collision theory. Whay is it that reducing the activation energy will increase the rate of reaction?
Complete the progress check task on the companion sheet
Prove you knowledge so far by answering the final questions on the companion sheet