Volume Change on Freezing

Most recent answer: 10/22/2012

Q:
i have taken in my school that when the water freeze it's density decrease due to the hydrogen bond the question is : is that happen with all liquid when they freeze ? why ? the rule of the density is mass/volume that's mean when volume increase the density decrease so the matter float and if all the liquid expand when they freeze that's mean that all the solids will float on their liquids is that right ? thanks for helping ^__^
- nada (age 13)
Giza , Egypt
A:
Water is unusual in that the particular low-energy arrangement of ordinary ice has a little more space between the molecules than for the liquid. Most solids have a little less space between the atoms or molecules than their liquids. So most solids are more dense than the liquids of the same material.

Mike W.

(published on 10/22/2012)