which is denser ice or water why?

Answer 1

Ice floats.
Therefore it must be less dense than liquid water.

The empty spaces within the ice structure translate to a more open or expanded structure. The ice molecular structure takes up more volume than does liquid water. Thus, ice is less dense than liquid water.

Answer 2

Water is denser than ice. This is because when water freezes, it needs more space and it expands. The website below shows many lovely structures of ice from different angles.

The spatial structure of ice is due to the formation of hydrogen bonds, which are attractive forces that exist between the oxygen atom of one water molecule and the hydrogen atoms of two other neighbouring water molecules

Linking this expansion to Physics, water pipes will burst in winter when the water inside freezes. A great amount of force is generated. It is sometimes very dangerous to put a can of soda pop in the freezer of a fridge. It may explode!

By the way, the density of water = 1 g per cm^3
density of ice = 0.9 g per cm^3

Answer 3

Liquid water continues to contract(gets denser) down to about 4 degrees celsius after which point the molecules start to arrange in rings and the water starts to expand as it approaches the freezing point(0 degrees celsius) and the density starts to decrease. After it is frozen, the water molecules are fully locked into the ring like structure and are less densely packed compared to liquid and hence, the ice floats.

Answer 4

Water is denser than ice.

Answer 5

There was a time when ice, cut on frozen ponds and lakes, was
transported by fast clipper ships from New England to New Orleans
where it was worth its weight in gold. Nowadays this cold brittle
colorless substance is commonplace everywhere. Few people, however, know that ice is one of the strangest of all solids; and that, because of its unique properties, life on earth is what it is.

Those properties are due to the distinctive structure of a molecule of water, formed of three elemental particles or atoms -- two of hydrogen and one of oxygen -- expressed by the familiar symbol, H2O. The three atoms are held together by two chemical bonds expressed by another symbol, H-O-H. Briefly, the unique properties of water, water vapor, and ice arise from that bonding and the arrangement of electron pairs around the oxygen atom.

The strangest and perhaps the most important property is that water expands as it freezes and a cubic foot of water increases almost 10 percent in volume. Consequently, whereas a cubic foot of water weighs about 62.4 lbs. at ordinary temperatures, a cubic foot of ice weighs only 57.2 and it floats. The blanket of ice that forms and floats on a pond in winter makes it possible for aquatic plants and animals (fish, etc.) to remain alive in the water underneath.

If, like all other substances except bismuth, water contracted and became denser as it solidified, ice would be heavier than water and sink to the bottom. More ice would form on the surface until the pond was frozen solid. Only the top would be melted into shallow slush by the heat in spring and summer; the ice below would never thaw. In the cooler parts of the world the rivers, ponds, lakes, and even the oceans would all be permanently frozen.

Water has a far greater capacity for absorbing and storing heat than other substances. It gives up that heat as it cools -- in autumn, for instance -- and continues to do so as it freezes. Conversely, as ice melts, the ice water absorbs heat from the air or objects around it, and that is the basic principal of refrigeration. Also due to that capacity, a large body of water such as Lake Michigan tends to moderate the climate in
its vicinity.

The temperature at which water freezes varies with the amount of pressure upon it and whether or not it contains anything in solution. Chemically pure water under atmospheric pressure at sea level, freezes at 32 Fahrenheit, Sea water does not freeze until its temperature drops to between 29 and 28 F; and the freezing point of brine -- water saturated with salt -- is 7 degrees below zero.

When the pressure upon water is increased, its freezing point is
lowered. If a heavy weight is suspended from a loop of wire passing around a block of ice, the wire slowly cuts all the way through it, leaving the block perfectly solid. The pressure of the wire melts a pathway which freezes again as soon as the pressure is removed.
Likewise, in skating, pressure of the skate blade melts a thin slippery film of water. By subjecting ordinary ice to enormous pressures, other kinds of ice can be produced and the freezing point of one of them is 40 degrees below zero ! If it were not for ice we would all be Eskimos.

Answer 6

Water is more dense than ice because the water molecules form a lattice with a lot more empty space between them than when they're being held together with simple van der Waals forces.


Doug

Answer 7

ice is denser because water cools to form ice the molecules of water tightly packed so it becomes weighter

Answer 8

I'm sure that ice is less than water

ice is colder than water

it floats in water

because it is hign deser than water

actually in oceans in lower part there will be warm water and in higher part there will be cold water so only fish lives

Answer 9

Water is more dense than ice. When ice crystallizes it creates a lattice that has more space between than atoms than when it was a liquid.

Answer 10

this is one of the unique properties of water. if ice floats on water it's less dense. it's all in how the crystal lattice is set up