Pressure if you are talking about pure water. Salt and other chemicals can lower the freezing point though.
LIQUID NITROGEN
Water is the liquid that has the lowest viscosity and helium is the gas that has the lowest viscosity.
Ideal liquid has zero viscosity.
a solid; frozen
When water vapour cools sufficiently, it can form liquid water. This is called condensation. If it is cooled below zero degrees Celsius it can form ice. This is also condensation. An example of the first one is droplets of water forming on a cold window, and an example of the second is frost.
Yes, water can stay liquid below zero degrees Celsius. There are a few ways in which this can happen. The freezing point of water drops below zero degrees Celsius as you apply pressure.
conditions that might turn liquid water in to solid might be cold degres below zero
According to wikipedia, zero degrees celsius is the melting point of H2O, so anything below zero would be the solid form or ice and anything at or above zero would be liquid or water.
LIQUID NITROGEN
Water is the liquid that has the lowest viscosity and helium is the gas that has the lowest viscosity.
Liquid nitrogen
The only element which is liquid is chlorine but there are many liquid compounds.
It is possible to keep water as liquid below its freezing point - see related link.
water: In zero or below zero degree celcious it will become solid, if the temperature increases it will melt ,if the increasing temperature continuous it will become a vapour form. then this is present in the atmospheric air . if the cool air or wind comes liquid form of rain will occur.
Because it has a lower freezing point than water. It can be cooled to below zero Celsius and remain in liquid form - making it a more effective coolant than plain water.
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It freezes.