When steam at 100 ∘C100\,^\circ\mathrm{C}100∘C condenses to water at 100 ∘C100\,^\circ\mathrm{C}100∘C, the particles
gain energy without a temperature change
lose energy and the temperature falls
lose energy without a temperature change
form a different chemical substance
84 exam-style questions on Edexcel GCSE Chemistry 3.1 States of matter, covering 3.1.1 The three states of matter and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.