Physics · May / June 2021 · Paper 11 · Question 19
5054Melting, boiling and evaporation
Which statement about water is correct?
- AAt the boiling point, water vapour molecules have the same kinetic energy as liquid water molecules.
- BEvaporation occurs only at the boiling point.
- CWater molecules become heavier when water freezes.
- DWater molecules lose all of their kinetic energy when water freezes.
As printed in the paper
Show the answer
Correct answer: A. At the boiling point, water vapour molecules have the same kinetic energy as liquid water molecules.
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.