the temperature scale used in chemistry, physics and some engineering calculations. Zero degrees Kelvin (-273 centigrade) is the temperature at which all thermal motion ceases. To convert from Kelvin into centigrade subtract 273 from the Kelvin temperature. the energy associated with an object because of its motion. the theory that states a gas consists of molecules in constant random motion. If you need to cite this page, you can copy this text: Kenneth Barbalace. Chemistry & Environmental...