Structure of ice
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Marcela Borjas
Sheiza Hernández
Fernanda Hurtarte
Have you ever been ice
skating?
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Ice is an interesting
and useful material.
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Ice can do great
damage when it
freezes roads can
buckle, house can
be damaged, water
pipes can burst.
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All this happens
because of a unique
property of water
and ice.
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When water
freezes, it expands
in volume as ice is
formed
Structure of ice
Liquid water is a fluid.
As water cools, its molecular motion slows and
the molecules move gradually closer to one
another. The density of any liquid increases as
its temperature decreases. For most liquids,
this continues as the liquid freezes and the solid
state is denser than the liquid state. However,
water behaves differently. It actually reaches its
highest density at about 4oC.
The structure of liquid water (left) consist of molecules
connected by short-lived hydrogen bonds because water is a
fluid. In ice (right), the hydrogen bonds become permanent,
resulting in an interconnected hexagonally-shaped framework of
molecules.
Ice is less dense than liquid water.
Ponds or lakes begin to freeze at the surface, closer to the cold
air. A layer of ice forms, but does not sink as it would if water
did not have this unique structure dictated by its shape,
polarity, and hydrogen bonding.
Ice is one of only a very few solids that s less dense than its
liquid form
The intermolecular structure of ice has spaces that are not
present in liquid water.