The Kelvin and Celsius
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State
The kelvin is SI's unit of temperature; Celsius shares its degree size but places zero at water's freezing point, not absolute zero.
Show
A change of one degree Celsius equals one kelvin, but 0 °C is roughly 273 K, not 0 K.
Watch for
Kelvin values are never written with a degree symbol — a habit carried over from Celsius and Fahrenheit that is incorrect.
Builds on
Unlocks
- 0111 Converting Between Temperature Scales
- 1224 Amontons's Law: Pressure and Temperature
- 1227 Charles's Law: Volume and Temperature
- 1427 Estimating Enthalpy of Vaporization from Two Data Points
- 1660 Solving the First-Order Integrated Rate Law for Time or Concentration
- 1698 Determining Activation Energy From Rate Constants at Two Temperatures