Physics 9702 · AS & A Level · Density and pressure

Density and pressure — practice question

Which row correctly shows how closely together the molecules are, how they are arranged and how they move in water and in ice when both are at a temperature of $0^{\circ}\text{C}$?

  • Amolecules in ice are closer together than molecules in water; a regular pattern of molecules in both ice and water; molecules in both ice and water have the same average speed
  • Bmolecules in ice are closer together than molecules in water; a regular pattern of molecules in ice but not in water; molecules in ice travel more slowly than those in water
  • Cmolecules in ice are further apart than molecules in water; a regular pattern of molecules in both ice and water; molecules in ice travel more slowly than those in water
  • Dmolecules in ice are further apart than molecules in water; a regular pattern of molecules in ice but not in water; molecules in both ice and water have the same average speed

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