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← ScienceWhich outcome occurs when ultrapure water transitions below its freezing point?
A)Supercooling occurs before ice crystal formation✓
B)Instantaneous crystallization releases latent heat
C)Homogeneous nucleation starts crystallization immediately
D)Deposition absorbs energy from the air
💡 Explanation
Supercooling occurs because the water needs to overcome an energy barrier for nucleation. It must decrease in temperature below 0°C before ice crystal formation via homogeneous or heterogeneous nucleation. Therefore, supercooling first explains the outcome, rather than immediate freezing; deposition is water vapor based.
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