Concept:The phenomenon of ice cubes fusing together under mechanical pressure is known as regelation. It relies on the unique thermal and structural properties of water's solid lattice.
Formula:Not applicable.
Solution:- When severe pressure is applied to ice, its melting point locally decreases, causing a microscopic layer of water to temporarily melt at the contact boundary between the two cubes.
- Once the external pressure is released, this thin layer of liquid water rapidly refreezes.
- During refreezing, the water molecules perfectly realign their partial charges to form rigid, highly stable Hydrogen bonds across the boundary, seamlessly stitching the two distinct cubes into a single continuous crystal lattice.
Why other options are incorrect:Water's entire solid state structure is governed specifically by hydrogen bonding, not generic dipole or Van der Waals forces. Covalent bonds strictly hold the O and H together
within the individual molecule, not
between different molecules.
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