As liquid water freezes, the molecules arrange themselves in a way that takes up more space than liquid water. what would most likely occur if the arrangement of frozen water molecules required less space than that of liquid water molecules?

a).the density of ice would be greater than the density of liquid water, and ice would not float.

b). ice would form in layers, and liquid water would get trapped in between the layers.
liquid water would have a higher specific heat, making it less likely to undergo vaporization.

c).the freezing point of water would decrease, making ice more difficult to form.

A).The density of ice would be greater than the density of liquid water, and ice would not float.  

Explanation:

The density of substance depends on its mass and volume. It can be defined as the matter contained in a unit volume.

A denser substance sinks while a less dense substance floats in a fluid.

Ice floats on water because its water molecules occupy more space than liquid water molecules. If the frozen water molecules occupied lesser space, its density would have increased and it would sink in water.

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