Why does ice weigh less than water, i know expansion but why does it float in fresh water,Simple? think b4 res

Question

Why is this? all things being the same,ext temp? by only few degrees

Answer 1

density of ice is less than density of water

molecules are further apart

the actual weight depends on how much you have (same as the actual weight of water)

Answer 2

If I understand this question correctly, you are asking why ice is so much lighter (less dense) than liquid water. This is actually a good question. Most other substances are denser as solids than as liquids. Water is an exception to this rule, at least the kind of ice that forms at a temperature near the freezing point of water and at atmospheric pressure. Ice can have other, denser crystalline forms at higher pressures or lower temperatures.

The answer lies in the crystal structure of ice, which has a very open hexagonal structure. This open structure is kept stable by hydrogen bonds, a special kind of electrical attraction between a hydrogen atom in one water molecule and the oxygen molecule of its neighbor. Although other substances can have hydrogen bonds - they are quite important in proteins, for example - hydrogen bonds are especially strong between water molecules. These bonds give the water molecules a strongly preferred orientation with each other that encourage the water molecules into what would otherwise be a rickety, unstable structure.

Answer 3

Like most things that float, ice floats because it is less dense than liquid water. Ice is about 9% less dense. When ice forms, it takes up about 9% more space than it did as a liquid. Thus, a 1 liter container of ice weighs less than a 1 liter container of liquid water, and the lighter material floats to the top. As we said, water is different.

Answer 4

No, all thing are not the same, even excluding temp.

You said expansion yourself. They are the same compound, but one is solid and has expanded- and thus less dense. It is density which causes things to float and sink. Ships weigh thousands of pounds and yet do not act like a thousand pound chunk of steel.
Similarly, there are examples of bodies of water in which exist layers of water which float upon one another. The colder, more dense layers occur beneath the warmer, less dense ones. Warmer water-the-fluid is less dense than coler water-the-fluid. Upon freezing (solidification) water expands tremendously.... it'll float in either warm or cold water.

Answer 5

basically, density equals mass over volume
therefore, because ice has a bigger volume than water and the same amount of mass, its density is lower than water. If ice is less dense than water, it floats.

Answer 6

H2O forms a crystal structure when frozen. This crystal structure has big hexagonal-shape empty spaces in it. Thus, it floats in the denser liquid H2O which has no holes, but in which molecules slide over top of one another.