According to the kinetic particle model, which of the following correctly describes the changes in the average molecular kinetic energy, EkE_kEk, and the average molecular potential energy, EpE_pEp, of a substance when it undergoes condensation at a constant temperature?
Average molecular kinetic energy decreases, while average molecular potential energy remains constant.
Average molecular kinetic energy remains constant, while average molecular potential energy increases.
Average molecular kinetic energy remains constant, while average molecular potential energy decreases.
Both average molecular kinetic energy and average molecular potential energy decrease.
27 exam-style questions on OCR GCSE Chemistry The particle model. Each one has a worked solution and a mark scheme showing where the marks go.