When we heat a substance, energy associated with its atoms or molecules is increased. This means --------
Correct answer: A. Heat is converted to internal energy
- A. Heat is converted to internal energy
- B. Heat is converted to only potential energy of the particles
- C. Heat is converted only kinetic energy of the particles
- D. Heat is converted to temperature of gas
Explanation
Option A is correct since when heat is added to a substance, the energy associated with the motion and configuration of its atoms or molecules increases. This increase in internal energy is a result of the added kinetic and potential energy of the particles within the substance. Heat, in thermodynamics, is a form of energy transfer, and when it is absorbed by a substance, it leads to an increase in the internal energy of that substance, causing its particles to move more vigorously or, in the case of phase changes, to undergo a change in configurationU = Q-W
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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