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Q: Why can't scientists cool matter to absolute zero?
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Why might it be especially difficult for scientists to cool a substance all the way down to absolute zero?

Absolute zero is an extreme temperature: at this temperature any motion ceases, it is the total death.And this temperature is out of reach.


How does particles behave as they cool down?

At absolute zero they don't move.The more you cool, the less Brownian motion of particles!


What does the temperature scale on which zero is the temperature at which no more energy can be removed from matter mean?

The Kelvin scale with 0 at absolute zero means that you cannot get negative Kelvins. As you cool matter closer and closer to 0K the atoms in matter move less and less. they cannot move less than not at all.


Which law states absolute zero cannot be reached?

This would be a consequence of the 2nd law and the "zeroeth" law. Heat always flows from the warmer object to the colder one (2nd law), so to cool something down to absolute zero, you would have to have something colder than absolute zero to absorb the heat coming out. The zeroeth law, however, defines absolute zero as a ground state where energy has been reduced to its absolute minimum - thus you cannot go below absolute zero and thus there cannot be something to absorb the energy to take an object to system down to absolute zero.


Why the absence of motion is called absolute zero?

Atoms shake slightly back and forth, they dont just stay still. when you heat an atom up it will move around even more but if you cool it to absolute zero, it will not move atall.

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Absolute zero is when the atoms of all matter will stop moving. It can't be further cooled once they stop.


Why might it be especially difficult for scientists to cool a substance all the way down to absolute zero?

Absolute zero is an extreme temperature: at this temperature any motion ceases, it is the total death.And this temperature is out of reach.


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