A student has three samples of water, each of mass 18 g: ice at 0 ∘C0\,^\circ\mathrm{C}0∘C, liquid water at 0 ∘C0\,^\circ\mathrm{C}0∘C and steam at 100 ∘C100\,^\circ\mathrm{C}100∘C.
Statement 1: the three samples all contain the same number of water molecules
Statement 2: the particles in the ice at 0 ∘C0\,^\circ\mathrm{C}0∘C have less energy than the particles in the water at 0 ∘C0\,^\circ\mathrm{C}0∘C
Statement 3: energy must be supplied to the water at 0 ∘C0\,^\circ\mathrm{C}0∘C to turn it into ice at 0 ∘C0\,^\circ\mathrm{C}0∘C
Which statements are correct?
1 only
1 and 2 only
2 and 3 only
1, 2 and 3
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.