Chemistry · May / June 2023 · Paper 11 · Question 14

Catalysts change the rate of chemical reactions. Which statements correctly describe the effect of adding a catalyst to a reaction? 1 All reactant particles have more energy and move faster. 2 The activation energy is lowered. 3 More reactant particles collide with enough energy to react.

1. A1, 2 and 3
2. B1 and 3 only
3. C2 and 3 only
4. D3 only

As printed in the paper