# What is Absolute zero (or 0 Kelvin)?

Apr 6, 2017

Absolute zero is a projection from empirical evidence where the theoretical volume is zero and the kinetic energy is zero.

#### Explanation:

By graphing the relationship between volume and temperature in degrees C the line can be extended to a point on the line where the volume equals zero.

The point where the line for volume equals zero is defined as absolute zero or approximately -273 degrees C.

Since volume is proportionally to kinetic energy, 0 degrees is defined as the temperature where there is no volume and no kinetic energy.

Theoretically at absolute zero even electrons stop moving and all matter would turn to dust, a collection of protons, neutrons and electrons. Atoms as such would break about apart into sub atomic particles.

Apr 6, 2017

Absolute zero is -273.15 degC or −459.67degF

#### Explanation:

This is the lowest point in the dynamic state of matter in particular that of an ideal gas. At this temperature (or approaching it) molecular motion is minimal and the matter cannot get colder.

Scientists have managed to reduce the temperature of samples of matter to near absolute zero Kelvin degrees.

Apr 6, 2017

Absolute zero is the lowest theoretically possible temperature. It is defined as the state when enthalpy and entropy of an ideal gas reach the minimum value possible.

Absolute zero is $0 \setminus \text{K}$, ${273.15}^{\circ} \setminus \text{C}$, $- {459.67}^{\circ} \text{F}$, and ${0}^{\circ} \setminus \text{R}$.

#### Explanation:

At absolute zero enthalpy or heat ceases to exist as a measurable physical quantity. This would be the minimum value possible.

Entropy is a measure of disorder ( or the lack of order) At absolute zero entropy is at its maximum which is the lowest value of useable matter and energy. At absolute zero electrons would theoretically stop moving and even the order and structure of atoms ceases to exist. This would be the maximum value of entropy.

Temperature is a measure of kinetic energy. absolute zero is the lowest theoretical possible temperature. This means that absolute zero is the lowest possible measure of motion. Theoretically at absolute zero all motion ceases.