thermal energy

thermal energy

1. Heat

   • specific heat capacity
     • heat energy needed tp raise 1kg of a substance by 1K
   • heat transfer

2. Internal energy

   • internal energy is randomly distributed across all molecules  according to Maxwell-Boltzmann  distribution.
   • Maxwell-Boltzmann Distribution
     • graph obtained by plotting kinetic energy against no. of molecules having that energy
     • characteristic shape of the graph shows that : 1- there are no molecules with 0 energy 2- only a few molecules have high energy 3- there is no maximum value of energy a molecule can have
     • this graph is for one specific temp. as temp. changes so does the graph. the peak on the graph goes towards higher energy as temp. increases.
     • Boltzmann constant,k, is 1.38*10^-23 J/K
   • sum of potential energy and kinetic energy of all molecules within a body

3. Temperature

   • unit is Kelvin,K

4. Molecular Kinetic Energy

Bilder und Dateien der Mindmap