What happens to the entropy of a sample of matter…
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State the second law of thermodynamics. How does the second law explain why heat travels from a substance at higher temperature to one at lower temperature?
The second law of thermodynamics is a law stating that for any spontaneous process, the entropy of the universe increases. So according to the second law, energy is dispersed, not concentrated. The transfer of heat from a substance of higher temperature to one of lower temperature results in greater energy randomization. The energy that was concentrated in the hot substance becomes dispersed between the two substances.