Why does ice float in water?

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Myn Is Meposted 6 years ago

Why does ice float in water?

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Physicshelpposted 6 years ago

It's not a question solely of weight, but of density. When water freezes, the amount of hydrogen bonding (Attraction between slight imbalances in positive [hydrogen] and negative [oxygen] charges)  increases, resulting in the formation of a crystalline structure.  As it happens, this structure happens to be less dense (less molecules per unit volume)  than liquid water, and will hence float on top of, or in it.

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Noumanasrarposted 3 years agoin reply to this

you have gone to far.

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Because water expands as it turns into ice, and a pound of ice must therefore take up more room than a pound of water. Only about one-ninth of an iceberg floating in the sea is above water.

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hush4444posted 6 years ago

Archimedes' principle (paraphrased) - an object placed in water will float in direct proportion to the weight of the water it displaces.

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Noumanasrarposted 3 years agoin reply to this

archimedes principle is for upthrust of liquids for volume of solid. ice floats on water due to its low density.

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Noumanasrarposted 3 years ago

ice floats on water  because when water is cooled its density becomes low . Density of ice is 973.1 (kilogram per cubic meter) where as water is 1000 (kilogram per cubic meter) due to its low density and high volume it floats over water.

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melbelposted 3 years ago

Because of the crystalline structure of ice, it is less dense than water. Water is the most dense at around 4 degrees F (just above freezing.) At temperatures above 4 degrees F, the density of water starts to decrease. Strange, eh? Water has lower density at 0 F than 4 F and lower density at say 10 F than 4 F.

This goes to show how unique water is (and how fun it is to study!)

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