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2. Temperature, heat and pressure

Conclusions

In thermodynamics, heat and temperature are closely related concepts with precise definitions.

  • Heat, \text qqstart text, q, end text, is thermal energy transferred from a hotter system to a cooler system that are in contact.
  • Temperature is a measure of the average kinetic energy of the atoms or molecules in the system.
  • The zeroth law of thermodynamics says that no heat is transferred between two objects in thermal equilibrium; therefore, they are the same temperature.
  • Heat, \text qqstart text, q, end text, is thermal energy transferred from a hotter system to a cooler system that are in contact.
  • Temperature is a measure of the average kinetic energy of the atoms or molecules in the system.
  • The zeroth law of thermodynamics says that no heat is transferred between two objects in thermal equilibrium; therefore, they are the same temperature.
  • Heat,  q, is thermal energy transferred from a hotter system to a cooler system that are in contact.
  • Temperature is a measure of the average kinetic energy of the atoms or molecules in the system.
  • The zeroth law of thermodynamics says that no heat is transferred between two objects in thermal equilibrium; therefore, they are the same temperature.
  • We can calculate the heat released or absorbed using the specific heat capacity C the mass of the substance \text mmstart text, m, end text, and the change in temperature ΔT in the following equation:
  • q = m × C × ΔT

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