__________ is the fraction 1/273.16 of the thermodynamic dynamic temperature of the triple point of water.

The correct answer is Kelvin.

Key Points

• The Kelvin is the base unit of temperature in the International System of Units (SI).
• It is defined as the fraction 1/273.16 of the thermodynamic temperature of the triple point of water.
• The triple point of water is the unique temperature and pressure at which water can coexist in equilibrium in all three phases: solid, liquid, and gas.
• The Kelvin scale does not use degrees; temperatures are simply stated in Kelvins (K).
• Absolute zero, the lowest possible temperature where molecular motion stops, is 0 K.

Additional Information

• Thermodynamic Temperature
  • It is a measure of the absolute energy of particles in a system.
  • It is measured in Kelvins in the SI system.
• Triple Point of Water
  • Occurs at precisely 273.16 K (0.01°C) and a pressure of 611.657 pascals.
  • It is used to define the Kelvin unit in the SI system.
• Absolute Zero
  • It is the theoretical lowest temperature possible, at which point particles have minimal vibrational motion.
  • It is defined as 0 K, equivalent to -273.15°C or -459.67°F.
• Temperature Scales
  • Celsius (°C): Used in most parts of the world, based on the freezing (0°C) and boiling points (100°C) of water.
  • Fahrenheit (°F): Used primarily in the United States, where water freezes at 32°F and boils at 212°F.
  • Kelvin (K): Used in scientific contexts, based on absolute zero and the triple point of water.