Physics · May / June 2020 · Paper 12 · Question 24

Thermal energy is used to turn water at 100 °C to steam at 100 °C. Which of the following occurs? 1 The forces between the molecules decrease. 2 The speed of the molecules increases. 3 The separation of the molecules increases.

1. A1, 2 and 3
2. B1 and 2 only
3. C1 and 3 only
4. D2 and 3 only

As printed in the paper