Does water become more or less dense when it freezes??

Answer 1

the easy answer is that it is less dense, but if you want the real answer, it is most dense at 4C, here is a graph

http://www.piercecollege.edu/offices/weather/water.html

Answer 2

There are three states for matter. These are often referred to as Gas, Liquid, and Solid - the order is from "least dense" to "most dense".

What this means is that as a material cools, the atoms are less energetic and don't move around as much. Therefore the same volume of material (atoms) occupies less physical space ... and thus more dense.

Of course, for every rule there's always at least one exception. As luck would have it, good old H2O (water) is one.

Water, in its solid form, is called ice. Ice (the solid) is less dense than water (the liquid) ... as you can see when ice floats.

The actual "solidification point" (where both liquid and solid forms can co-exist) for non-saline H2O is 4 C. Reducing (or raising) the temperature further does not further lessen the density of the material in its current "state" - once it's changed form, the density is constant.

Answer 3

Less dense. Less dense things float on more dense things. Ice floats on water.

Answer 4

Water becomes denser as it gets to 4 degrees celcius but after that point the water crystallizes and it expands the frozen water making it less dense, thats why ice cubes float in another liquid.

Answer 5

Water expands when it freezes, becoming less dense. This is why ice floats in water.

Answer 6

Because the molecules spread farther apart (the reason ice expands), water is less dense as ice. It is less dense than fluid water, hence it floats.

Answer 7

It becomes less dense, hence ice floats in water.

Answer 8

It's less dense, that's why it floats!

Answer 9

less dense

Answer 10

IT BECOMES MORE DENSE, DONT LISTEN TO THEM