Question

what is absolute zero

Answer 1

Is the lowest possible theoretical temperature and is characterized by the total absence of heat. It is considered the zero point of the absolute thermometric scale, because it is considered that at such low temperatures the matter is in absolute state of rest, in the sense that the molecules are no longer animated by vibrations of any kind.
What is absolute zero?
The energy level is the lowest possible. Absolute zero (0º K) Kelvin scale, corresponds approximately to the temperature of -273.16º C.