During which state change does a substance absorb heat energy?

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Multiple Choice

During which state change does a substance absorb heat energy?

Explanation:
During melting, a substance transitions from a solid state to a liquid state by absorbing heat energy. This process involves the molecular structure of the solid gaining kinetic energy, which overcomes the forces holding the molecules together in a fixed position. As the temperature rises, the heat energy absorbed allows the molecules to move more freely, resulting in the substance transitioning into a liquid. This is a critical concept in thermodynamics, as it highlights how energy changes affect the physical state of matter.

During melting, a substance transitions from a solid state to a liquid state by absorbing heat energy. This process involves the molecular structure of the solid gaining kinetic energy, which overcomes the forces holding the molecules together in a fixed position. As the temperature rises, the heat energy absorbed allows the molecules to move more freely, resulting in the substance transitioning into a liquid. This is a critical concept in thermodynamics, as it highlights how energy changes affect the physical state of matter.

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