Question

what is absolute zero?
the theoretical highest temperature
the theoretical lowest temperature
the theoretical temperature at which degrees celsius equals zero.

Explanation:

Absolute zero is the theoretical lowest temperature. At this temperature, all molecular motion stops. It is \(0\) on the Kelvin scale (\(K\)) and \(- 273.15^{\circ}C\). The first option (theoretical highest temperature) is incorrect as it is the opposite. The third option (theoretical temperature at which degrees Celsius equals zero) is also wrong because \(0^{\circ}C\) is not absolute zero.

Answer:

The theoretical lowest temperature.