Chapter 10- Specific Heat Capacity Flashcards
Thermal equilibrium def
A system is in thermal
Equilibrium if it is radiating energy at the same rate as it is absorbing energy
System will then have a constant temperature
Heat def
The FLOW of energy
Energy always flows from a hot object to a cold object
Temperature
The measure of the average kinetic energy of vibrating atoms
Mean, random kinetic energy of the vibrating atoms of a body
Internal energy def
The sum of the kinetic and bond potential energies of the molecules of a system
Internal energy eq
U= KE of random molecular motion + PE (of the bonds)
How to get from degrees to kelvin
+ 273 to the degrees
What is 0 kelvin
The temperature at which particles of the system have zero kinetic energy
Three ways of thermal energy transfer
Conduction
Convection
Radiation
Specific heat capacity def
The amount of energy that is required to raise the temperature of 1kg of a substance by 1 kelvin
Specific heat capacity eq
E= mC🔺T
C- specific heat capacity (Jkg^-1K^-1)
E- change in energy (J)
m- mass (kg)
T- Change in temperature (K)