what happens at absolute zero?
143462
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760783
Nothing will happen man. It's vacuum out there, no nitrogen CO2 and so on.. so no decomposition can take place.
615371
If the air cools to truly frigid Arctic temperatures such as -40 C and below then the moisture capacity of the air will be so low that likely not much snow can occur. Only at these extremely low temperatures is the phrase "it is too cold to snow" fairly valid.\n\nAt the temperature of absolute zero ( 0 K, -273 C, -459 F) all air including water vapor condenses and loses all molecular energy. The temperature can not cool below absolute zero. \n\nIts can't snow in deep space.......
932412
Well, if you're talking about water, that would be 0 degrees (freezing) and 100 degrees (boiling)
343972
NOOOOOOOOOO!!!!!!!!!!\nAbsolute zero simply means that all EXCESS energy from the system will have been removed - the system will still have ground-state energy!\nThink of the quantum harmonic oscillator, E = (n+1/2)hw/2pi\nEven if n=0 (lowest energy state for the oscillator) there is still some energy.\nIf you model the vibrations of atoms as independent harmonic oscillators, you will see that all molecular motion DOES NOT STOP at absolute zero.\n\nFurthermore, whether something is solid depends not only on the temperature, but also on the pressure.\nExperiments have shown that liquid helium stays liquid until all the way to about 0.0001 kelvin (about the lowest temperature ever reached) at atmospheric pressure, (but displays superfluidity) but that increasing the pressure will cause it to solidify at some temperature.\n\nI am sorry to get so side-tracked answering this question, but i felt that the misconceptions of the other answerers must be addressed.\nIn answer to your question, no, not everything will be solid at absolute zero.
504847
It gets colder. So clearly not isothermal (which means it stays the same temperature). It's adiabatic because no energy is released or absorbed.
1107145
Temperature is indicative of the energy of a system. Ultimately temperature is a measure of the average energy of atoms or molecules of a system. The Kelvin scale is a scale that theoritically start from a state of a system with zero energy. Since energy cannot be negative (we havent observed one in nature) so consequently there is no negative temperature in degree kelvin.\n\nSo what happens really when an atom reaches the threshold of zero degree kelvin? Nobody has done an experiment that reached that temperature so far. To me I think its the opposite extreme of the big bang in the miniature scale. At the start of the big bang it was all energy, then it became cooler, some energy condensed to matter. So at zero degree kelvin, the system has no energy, I mean the system is pure matter with no internal energy.
331943
Should think so.\n\nYou can take a pot of water and an intense laser with you to space (Combustion may not be your best bet, even if you are taking oxygen cylinders. It may get too unpredictable).\n\nOnce in space, direct the laser at the pot. In due time, it should 'boil'.\n\nWell actually, the behaviour of water at zero pressure is quite peculiar. It can be seen from the phase diagram that water skips the liquid state at low pressures, and exhibits sublimation. \nSo even if you manage to keep the water liquid until you ready it for boiling, the moment you expose it to space(meaning zero pressure) some of the water will immediately turn into vapour. The remaining mass, will, in the absence of any heat source, freeze. \n\nIf you do provide heating, it will obviously vapourize. \nThus, strictly speaking, it will not 'boil'.
1041749
Not as far as I know. I'm currently studying Physics at Uni and  studied thermodynamics last year. Negative Kelvins don't really make sense - 0 degrees Kelvin is a sort of absolute zero in terms of temperature.\n\nScientists still aren't able to cool anything down to 0 degrees Kelvin (approx. -273.15 degrees Centigrade) and have only come as far as about one hundredth of a degree, if I recall correctly.\n\nIf anyone gets a negative result in Kelvins, they most likely have done something very wrong. Either that or the person has miraculously solved one of science's biggest problems. :D If so, I suggest you go on to discovering the United Theory.
730140
The ice would gain 124.3 kJ in moving from -10 °C to zero.\nThe water would lose 252.0 kJ in moving from +10°C to zero.The difference in the two energies is sufficient to melt 383 g of ice.\nSo the mixture will be at 0 °C and will consist of 6383 g of water and 5617 g of ice.
281751
Nothing will happen. THere is no sense of time when travelling at the speed of light. No time - nothing happens.\nYour clock is stopped cold.
811595
Add 273 to your Celsius degree to get it in Kelvins\nK = C + 273\n\nThat's because 0-degrees Celsius = 273-degrees Kelvin. \n0-degrees Kelvin = absolute zero, so you can't have negative Kelvins. \n\nHope that helps
1137454
Great question!  And there is a absolute hot, at least for proponents of the Big Bang.  If all matter originated in one big event, at some point during that 'explosion' the maximum universal kinetic energy was reached, and that is as hot as things could get.  After this, the universe tends towards entropy, or a 'averaging out' of all available energy to a base level.  Right now you could call that the 'temperature' of space.  \n\nThe measurement of the kinetic energy of a molecule is relative, so 'absolute zero' is a observation made under local conditions.  Conceivably, under local conditions, one could accelerate some mass to the speed of light.  How to do it, or if it will ever be possible, don't ask me!
668301
cryogenic freezing takes the object to absolute freezing (i.e. not just cold as in -20°).\n\nAbsolute freezing is -273.15°C (or 0° Kelvin)\n\nAt this temperature atoms completely stop moving and therefore stop aging. Anywhere above this temperature, then atoms still move, even if it is a slight little bit.
589959
0 Kalvin\notherwise called "absolute zero"
711263
It is impossible in principle to reach absolute zero.  Temperatures of microkelvins have been achieved, but to actually reach absolute zero would require something colder to act as a heat sink, and of course that is impossible.
813210
No.\n\nIt is perfectly possible for electricity to flow even at absolute zero - those who think it is not need to revisit their understanding of what thermodynamic temperature is.\n\nSuperconductivity is a very special case, and you cannot form electrical impulses in a superconductor - in fact you cannot change the current flowing in a superconducting circuit at all without introducing a non-superconducting element (usually called a weak link).