2007-03-21 22:09:16 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Boiling and freezing point of water is altered by pressure.
If we press two ice cube together it joins. The pressure exerted at the contact point increases and the melting point of ice decreases and water is formed there. When we release the pressure the water changes into ice.
In a pressure cooker the pressure increases the boiling point of the water and cooks faster.
The reason behind sea water not freezing is different. When top of the sea water freezes the ice formed so being lighter than water floats on the top surface. Thus the water below ice remains in liquid state. The presence of salt ( impurities ) also increases the freezing point of water.
2007-03-22 00:03:31 · answer #1 · answered by Bishu 3 · 0⤊ 0⤋
Increased pressure definitely lowers the boiling point of water, so i guess it also lowers the freezing point of water ? Salt definitely lowers the freezing point of water. Any water that freezes to ice will float on top of water so it's impossible to find frozen water down deep.
2007-03-21 23:13:30 · answer #2 · answered by =42 6 · 0⤊ 0⤋
If all holds authentic, then the freezing element would be decrease. by way of fact, The boiling element of water under pressure (like a radiator in a vehicle) is bigger, so conversely the freezing element could be decrease under pressure.
2016-12-15 06:05:25 · answer #3 · answered by ? 4 · 0⤊ 0⤋
salt when sea water begins to freeze the salt seperates from the sea water and falls towadrs the bottem of the sea
2007-03-21 22:20:46 · answer #4 · answered by lextrek 1 · 0⤊ 1⤋
could it have something to do with salt?
2007-03-21 22:12:26 · answer #5 · answered by Anonymous · 0⤊ 1⤋