What are the two factors that determine an object's thermal energy?

An object's thermal energy is dependent upon its temperature and mass.The higher the temperature of a given quantity of a substance, more is its thermal energy. Similarly, for the same temperature, higher mass of a substance will contain more thermal energy. When we supply heat to a substance, its temperature rises and so is its thermal energy. Consequently, a substance loses its thermal energy and consequently its temperature. The only exception is the phase...

An object's thermal energy is dependent upon its temperature and mass. The higher the temperature of a given quantity of a substance, more is its thermal energy. Similarly, for the same temperature, higher mass of a substance will contain more thermal energy. When we supply heat to a substance, its temperature rises and so is its thermal energy. Consequently, a substance loses its thermal energy and consequently its temperature. The only exception is the phase change, where the substance will change its phase (by absorbing heat), without a change in its temperature. To demonstrate the effect of mass on thermal energy, try heating two different quantities of water and measure their temperature. The container with a higher quantity will need higher heat input for the same temperature rise and hence has higher thermal energy.

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