Fisis properties of Sea Water ( 2 )

When frozen, the water molecules form a tetrahedron of volume expansion resulted in a sudden, with reduced density. Therefore, the water in the solid phase is much lighter than water in liquid phase, where it was a rare trait that we find. Consequently:
1. Ice will float. This is essential for life in freshwater lakes, because the ice acts as insulation against the release of heat energy (heat) so that the freezing of water from the surface to the bottom will not happen.
2. Density decreases rapidly at the time of the freezing point of water is reached. Expansion that occurs during freezing is the main cause of rock weathering.
3. Reduced freezing under pressure, resulting melting occurs at the base of the glacier that memudahan glacier flow.
4. Hydrogen chain broke under pressure, so the ice under pressure will be plastic, as a result of land ice in Antarctica and the Arctic ice flows off the mountain in the outer. Without this process, then all the water will be ice in the polar regions.