Two sealed samples contain the same number of identical molecules. Sample P is a liquid of density 800 kg/m3. Sample Q is a gas of density 2.0 kg/m3. Which statement compares their masses and volumes?
Their masses are equal; P occupies 400 times the volume of Q.
Q has 400 times the mass of P; their volumes are equal.
Their masses are equal; Q occupies 400 times the volume of P.
P has 400 times the mass of Q; their volumes are equal.
87 exam-style questions on Edexcel GCSE Physics 14.1 Density and states of matter, covering 14.1.1 Kinetic theory and states of matter, 14.1.2 Density, and 14.1.3 Density and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.