Why is water denser than ice?

Question

Just some biology questions i want to know?

Answer 1

ice is a structure of molecules that have less activity going on than water itself in a fluid state. by the time water reaches the freezing point to become ice, the molecules have to be at a comfortable distance (attraction) to each other. water flows to the lowest settling area and isn't confined to this restriction.

Answer 2

The hotter water is, the faster the molecules that make it up are moving. As water begins to freeze, the molecules slow down and eventually become still, and are pushed out of the way by the moving molecules. That's why in a stream the flowing water is always at the bottom, and the ice appears in layers from the top.

It's like visuallizing a marathon. All the runners are moving at fast paces at start, producing lots of energy. As they get tired and slow down, they are pushed out of the way by the other energetic runners - and they go backwards. Water only moves in one direction unless an outside force changes it. So when the molecule "runners" stop producing energy, they just can't go backwards because there's constant resistance, so they are instead shoved to the area of least resistance, which is on top of the moving molecules!!!

Answer 3

water reaches its maximum density at 4 degrees C -- that is, four degrees above freezing.

Water, gallium, bismuth, acetic acid, antimony and silicon are some of the few materials which expand when they freeze; most other materials contract.

In the case of water, the crystal structure (hexagonal ice) has more space on average between the molecules than liquid water does. This is due to the hydrogen bonds that form in ice, which are too weak to bond in liquid water and so when liquid, the molecules can take random positions with respect to each other.

Answer 4

Liquid water is most dense, at 4 °C and becomes less dense as the water molecules begin to form the hexagonal crystals of ice as the temperature drops to 0 °C. This is due to hydrogen bonds forming between the water molecules, which line up molecules less efficiently when water is frozen. The result of this is that ice floats on liquid water

Answer 5

the hotter water is, the speedy the molecules that make it up are moving. As water begins to freeze, the molecules decelerate and finally finally end up nevertheless, and are pushed out of the perfect way by skill of the transferring molecules. it extremely is why in a flow the flowing water is many times on the bottom, and the ice looks in layers from the optimal. it could be like visuallizing a marathon. all the runners are transferring at quick paces at initiate, generating a large number of potential. As they get drained and decelerate, they're pushed out of the perfect way by skill of the different lively runners - they in many cases flow backwards. Water in effortless words strikes in a unmarried route till an exterior stress adjustments it. So at the same time as the molecule "runners" stop generating power, they in effortless words can't flow backwards thinking there is prevalent resistance, so they're instead shoved to the area of least resistance, it is on excellent of the transferring molecules!!!

Answer 6

In the ice crystal lattice, there is more space between the molecules of water than there is in liquid water. Water is at it's maximum density ~37 degrees F.

;-)

Answer 7

The volume of water expands as it freezes. This is because of how the molecule is shaped. They are small molecules as individuals, but they join in to large blocks as they freeze.
The web site below explains it well in detail and with good illustrations.

Answer 8

When water freezes, the molecules form a crystal lattice, so they are more spread out.

Answer 9

this is because of the way ice crystalizes

Answer 10

chemistry books are good refferences, and include also I-net materials