Why is Absolute Zero the lowest possible temperature?

Answer 1

Absolute zero is defined as the point at which objects have no thermal energy. You can't have less than zero energy.

Answer 2

Absolute zero is the lowest possible temperature we now know of: How ever this does not mean that some day we mite not learn of temperature that are lower in outer space, and under special conditions. So an honest answer to your question would be: with today's knowledge absolute zero is the lowest poss able temperature that humans can now imagine.

Answer 3

This is the point where the internal energy of a substance's molecules are at zero. This means no kinetic energy (translational, rotational, vibrational) and no potential energy between the molecules themselves. Hence there is no motion and the molecules are absolutely stationary.

No energy = no heat.

It is difficult to reach this temperature (it hasn't been reached on Earth anyway) as molecules always have some potential energy left, but from a mathematical graph, this temperature has been calculated as the lowest possible.

Answer 4

There is a relationship between the temperature and kinetic energy of atoms, molecules and other particle: KE = 3/2kT where k is Boltzmann's constant, and T is temperature in Kelvin. Absolute zero is the absence of all kinetic energy. SO if you had a negative tempeature below absolute zero, you'd have negative kinetic energy, which is not possible - 1/m v^2 < 0 implies the speed, v, is an imaginary number.

SO at absolute zero there is no motion, a lower temperature implies some violation of physics as we understand it.

Answer 5

Temperature is atoms (building blocks of matter) vibrating up and down in their fixed positions. Absolute Zero is the temperature corresponding to the atoms just not doing anything staying absolutely still. It's impossible to get there, even in deepest outer space there is always a little bit of vibration, but we can get very close in the laboratory and there are all kinds of weird phenomena that happen at this low low temperature and it's a whole branch of physics that studies this.

Answer 6

Scientists think of temperature a little different than the rest of us. While most of us think of temperature as hot and cold, scientists use it to measure the amount of vibrations of molecules in matter.

When temperature is high (hot), the molecules vibrate faster. When the temperature is low (cold), the molecules' vibration slows down.

The colder it gets, the slower they vibrate. Absolute zero is the point where the don't vibrate at all.

Answer 7

hi ! you know kelvins zero is the lowest temperature . well as others said , in this temperature molecules will stop moving , it may be interesting for you to know that how did they find this temperature ? you know that as much as the temperature comes down , volume comes down too ,scientist drown a graph that it was for temperature and volume , when they connected the dots on the graph , they understood that , if they continue it till the volume gets zero , they will achieve a temperature , which in that temperature molecules will stop moving and volume is zero ! achieving that temperature is so hard ! Take Care , Babye !

Answer 8

Temperature is a measure of thermal energy. At absolute zero there is no thermal energy, so yes it is the lowest possible temperature.

Answer 9

I don't know if bonds are broken- from what I remember and what seems logical to me, that's when bonds are strongest, when solids are the "most solid", like the "most frozen". But it is when all heat energy is gone so the molecules have stopped vibrating or moving about. It seems that every element would be a solid at absolute zero, but don't quote me on that.

Answer 10

Because it is defined as the temperature at which there is zero heat energy left in an object.

Did you bother to read the definition?