Physics 9702 · AS & A Level · Density and pressure

Density and pressure — practice question

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

  • Aordering: a regular pattern of molecules in ice but not in water; motion: molecules in both ice and water have the same average speed
  • Bordering: a regular pattern of molecules in ice but not in water; motion: molecules in ice travel more slowly than those in water
  • Cordering: a regular pattern of molecules in both ice and water; motion: molecules in ice travel more slowly than those in water
  • Dordering: a regular pattern of molecules in both ice and water; motion: molecules in both ice and water have the same average speed

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