Why does water expand

this happens when it freezes

Explanation:

When water freezes, its molecules get arranged in a crystalline structure, thereby attaining a defined shape. This crystalline structure is less dense, and since there are gaps between individual molecules in the structure, the overall volume increases and water expands

Water expands as it freezes because water molecules are very loosely bound. They are arranged in a hexagonal pattern inside of the ice. As the temperature lowers, the molecules move slower, which causes them to get closer together.

Explanation:

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