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← ScienceWhich outcome occurs when water ice transitions directly to vapor?
A)Molecules gain sufficient kinetic energy✓
B)Hydrogen bonds are newly strengthened
C)Crystal lattice structure remains stable
D)Molecular attraction potential increases sharply
💡 Explanation
Sublimation happens because the translational kinetic energy reaches a threshold; the mechanism here is thermal excitation. This overcomes intermolecular hydrogen bonds, liberating single gas phase molecules; therefore, state changes, rather than stronger attraction, occur as heat is supplied.
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