Which statement correctly defines latent heat of fusion?

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Multiple Choice

Which statement correctly defines latent heat of fusion?

Latent heat of fusion is the energy required to change a substance from solid to liquid at its melting point, with no change in temperature during that change. This energy is absorbed when melting and released when freezing. For example, ice at 0°C must take in heat to melt into water at 0°C, and water at 0°C releases heat as it freezes, while the temperature remains constant during the phase change. The statement that matches this idea describes energy exchanged during a solid–liquid change. The other options refer to the energy involved when changing between liquid and gas (latent heat of vaporization) or to a symbol for temperature and a unit for electrical current.

Latent heat of fusion is the energy required to change a substance from solid to liquid at its melting point, with no change in temperature during that change. This energy is absorbed when melting and released when freezing. For example, ice at 0°C must take in heat to melt into water at 0°C, and water at 0°C releases heat as it freezes, while the temperature remains constant during the phase change. The statement that matches this idea describes energy exchanged during a solid–liquid change. The other options refer to the energy involved when changing between liquid and gas (latent heat of vaporization) or to a symbol for temperature and a unit for electrical current.

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