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Heat vs Temperature:
Heat is the total energy of the motion of the molecules of a substance, whereas the temperature refers to the measure of the average energy of the motions of the molecules in the substance. The heat is dependent on factors like the speed of the particles, the size of the particles and the number of particles, etc.
The temperature, on the other hand, is independent of these factors. For example, let’s compare a tub of water with a cup of water. The water in the tub and the cup can be at the same temperature but by the virtue of the number of particles in the tub, the water in the tub has more thermal energy in it and thereby more heat even though they have the same temperature.
A temperature is a number that relates to the energy possessed by the molecules of a substance, which directly relates to the kinetic energy possessed by the particles of the substance. The SI Unit of temperature is degrees, Kelvin. As we said earlier, the temperature is directly related to the kinetic energy of the molecules, therefore if you double the temperature (in degrees Kelvin) of a substance, you double the average kinetic energy possessed by those molecules.