A-LevelPhysicsTemperature9702/12 · May/June 2013 · Q191 Mark
The diagram shows an ice cube floating in water. [Figure showing an ice cube floating in water] Both the ice cube and the water are at 0°C. Which statement correctly compares the molecular properties of the ice and those of the water?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AThe mean inter-molecular potential energies are the same for both the ice molecules and the
water molecules.
BThe mean inter-molecular separations are the same for both the ice and the water.
CThe mean kinetic energies are the same for both the ice molecules and the water molecules.
DThe mean total energies are the same for both the ice molecules and the water molecules.
✓ Correct answer
C: The mean kinetic energies are the same for both the ice molecules and the water molecules.
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