Why does water expand when it freezes as opposed to most other liquids that shrink in volume?

sequoianoir

The simple answer is that it is at its most dense state at 4 degrees centigrade. It it less dense both above and below this point. Jul 29 03, 5:41 PM

gmackematix

The more complex answer is that the crystal packing arrangement of water molecules in ice takes up more space than the hydrogen bonded H2O molecules do when flowing over one another in a liquid state. I think the element gallium is also denser when molten. Jul 29 03, 6:55 PM

Create a Free FunTrivia ID to add to, request more/new answers, or edit this entry

A recent documentary said that when an area of water freezes over, the thickness of the ice varies with the depth of water beneath it. Why should this be? Is it true that when making ice cubes, hot water freezes quicker than cold? Why does the water slow down just when it gets hot in the shower? Why do hot liquids bubble?

1 Water, Water! These questions are on the various bodies of water in the world. Bodies of Water Tough 10 Q mafekinggal May 05 01 2319 plays 2 Frasier: Seattle's Finest Shrink Here is a short quiz on the greatest of TV shows. "Frasier"! Frasier Average 10 Q wassupalphapro Aug 10 02 4746 plays 3 The Most in 2002 Super 12 draws crowds of avid rugby union enthusiasts from all over South Africa, Australia and New Zealand. Not even bad weather will stop them cheering on their favourite team. Can you remember what happened in 2002 ? Super 14s Difficult 10 Q valmur Oct 20 02 441 plays