>>11173994>>11173571Heat is the transfer of thermal energy due to temperature gradients (the phrase "heat transfer" is actually redundant). Work is also a kind of transfer of energy, but neither heat or work is energy per se.
Temperature is related to the average kinetic energy of all the molecules in the sample of a substance and the degrees of freedom that each molecule has. A single molecule cannot have a temperature. The existence of a state function called temperature is implied by the zeroth law of thermodynamics. Historically, thermometers operated on the principle that materials expand and contract depending on their "temperature." The thermodynamic temperature that you and I know today, like the Rankine (based) or Kelvin scales are actually based around the efficiency of a theoretical device called a Carnot engine. You should note that it is completely arbitrary that temperature is a linear scale.
>>11173991This isn't necessarily true.
