Samples of two different substances, M and N, contain the same number of particles. At normal atmospheric pressure, each sample is cooled from a gas until it condenses. The boiling points of the substances are shown in the table.
| Substance | Boiling point / ∘C^\circ\mathrm{C}∘C |
|---|---|
| M | -183 |
| N | 100 |
Use the data to explain which substance has stronger attractions between its particles.
Suggest which sample releases more energy when it condenses. Justify your answer.
93 exam-style questions on OCR GCSE Chemistry 1.1 The particle model, covering 1.1.1 The particle model and changes of state and 1.1.2 Limitations of the particle model. Each one has a worked solution and a mark scheme showing where the marks go.