2007-01-30 01:09:12 · 7 answers · asked by Pinky H 1 in Science & Mathematics ➔ Chemistry
no, it depends on the temperature and pressure.
when the pressure is high, more heat will be needed to melt that ice because the particles need more heat energy to convert into kinetic energy and thus, the melting point or the tem for that ice would be like1 degree -4degree.
if there's very little pressure, less heat energy would be needed to melt that ice and thus the tem can be a minus
2007-01-30 01:17:56 · answer #1 · answered by Chan Meiyean 2 · 0⤊ 0⤋
At normal pressure, pure water ice will melt above 0. However in the case of water the melting point can be lowered by applying pressure so ice would only form at lower temperatures.
2007-01-30 09:21:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
In order to be ice, the highest temp it can be is zero degrees celcius,....however, it can be much colder than that as well.
Above zero degrees...it will melt.
2007-01-30 11:40:26 · answer #3 · answered by nerdy girl 4 · 0⤊ 0⤋
No. Ice can be any temperature below 0 C. However, ice and water in equilibrium (at standard pressure) must be at 0 C.
2007-01-30 09:14:59 · answer #4 · answered by Anonymous · 0⤊ 0⤋
No. Presence of ions such as sodium ions can lower the temperature. This is because the ionic interactions between ions and water molecules are stronger than hydrogen bonds between water molecules. Hence, ice does not always have to be at zero degree celcius. Besides, it depends on the atmospheric pressure. Please refers to phase diagram for water for more information.
2007-01-30 09:21:04 · answer #5 · answered by Ang C 2 · 0⤊ 2⤋
It can exist at various temperature, not necessarily below 0, b'coz, its triple point (at which water exists in equilibrium, as solid, liquid, AND gas) is slightly above 0. Its easiest 4 u 2 c the Phase diagram in the wikipedia link which i quote...
2007-01-30 11:06:27 · answer #6 · answered by miga 2 · 0⤊ 0⤋
No it depends on what pressure it is under.. see Boyle's Law (note: for ideal gases)
PV = RT
P - Pressure
V - Volume
T - Temperature
R - Universal Gas Constant
It is ice under normal atmospheric pressure. The kelvin scale is calibrated using a more reliable mark - the triple-point of water.
2007-01-30 09:16:26 · answer #7 · answered by Pete 4 · 0⤊ 2⤋