A solid form of water. Water frozen, or reduced to the solid state by cold. Ice is a transparent, nearly colorless, crystalline, and brittle substance. Water in freezing expands about one eleventh of its volume, the specific gravity of ice being 0.9166, that of water at 4EC (39.2EF) being 1.0. Pure water freezes at 0EC (32EF), and ice melts at the same temperature.

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