Absolute zero?

Question

Is it possible to achieve Absolute zero kelvin?At this temperature what will be the state of matter?Give some examples for real and ideal gases.

I suppose at Absolute zero matter will reach a state of nothingness.

Answer 1

1) Theoretically yes, practically no. I'll put it this way- if we could create absolute zero, then we wouldn't be able to measure it, because to measure the temperature there would have some way for energy to flow in and out, and then energy would flow in through the temperature probe (thermometer) and it wouldn't be absolute zero anymore. Heisenberg said that if you observe something, just that act of observing it will change it.

2) It would be solid, sort of. In the same way that a plasma is a gas. Electrons would still be orbiting around nuclei, and matter would still exist as normal. (it really spun my head out when my quantum mechanics lecturer made me realise that!) All material would be superconductive, because the particles are all completely still in their lattices. Normally things are resistant to electron flow because the nuclei are wobbling about- it's like trying to ride an army of horses through a forest where the trees are all vibrating from side to side! Increased collisions=higher resistance.

3) Not sure what you mean by give examples, especially with gases.. Nothing would be a gas at absolute zero. Even hydrogen freezes at about 20K.

Answer 2

Absolute zero has never been induced by science.

since heat is the kinetic energy (movement) of molecules, absolute zero is zero heat, zero kinetic energy, zero movement.

If the molecules aren't moving at all, all real substances will become solids. An ideal gas has volume directly related to temperature, so at T=0, it would have zero volume. Obviously, this doesn't hold up in reality, but it's an extrapolation point.

Answer 3

Absolute zero as never and could never( with modern tech) be observed. When you make something cold, you need a barrier to keep the heat in, but the barrier can still gather temperture transfering a portion of the outsides heat to the inside. Therefore making absolute zero impossible unless the barrier has no mass.

Answer 4

Absolute zero is absolutely unreachable. This is related to the third law of thermodynamics, which says that at absolute zero, entropy (disorder) is zero. So absolute zero corresponds to absolute statistical certainty, which is unattainable.

You can get within a fraction of a millionth of a degree of it, at which point matter starts behaving very strangely, because for whole groups of atoms (Bose-Einstein condensates) quantum mechanical effects become important.

Answer 5

For the record, scientists can get CLOSE!

For example, experiments allow scientists to acheive temperatures of
0.000 000 001 K,
i.e. one billionth of a degree kelvin.

At absolute zero, materials will be crystals with zero entropy.

Answer 6

+-0