Internal Energy

Internal Energy: The sum total of all molecules in an object is called the Internal Energy/Thermal Energy.

Temperature: Average Kinetic Energy in an object

Heat: The transfer of energy because of the difference in temperature.

Internal Energy TemperatureHeat\text{Internal Energy }\neq \text{Temperature} \neq \text{Heat}

If a molecule has more than 1 atom, we have to account for vibrational and rotational energies:

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