heat of sublimation

physics

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June 29, 2026

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The heat of sublimation is the energy absorbed when a substance transitions directly from a solid to a gaseous state without becoming liquid. This process is also known as sublimation. It is a specific type of phase change where heat energy is used to overcome the intermolecular forces holding the solid together, allowing molecules to escape into the gas phase. For example, dry ice (solid carbon dioxide) turning into gas at room temperature is a common illustration of sublimation. Freeze-drying food also utilizes sublimation by removing water from frozen food under a vacuum.123

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carbon group element
Crystal structure
… energies associated with fusion (melting), sublimation (change from solid to gas), and vaporization (change from liquid to gas) among these four elements, with increasing atomic number and atomic size, indicate a parallel weakening of the covalent bonds in this type of structure. The actual or probable arrangement of valence electrons…
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… energies associated with fusion (melting), sublimation (change from solid to gas), and vaporization (change from liquid to gas) among these four elements, with increasing atomic number and atomic size, indicate a parallel weakening of the covalent bonds in this type of structure. The actual or probable arrangement of valence electrons…
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heat
Heat as a form of energy
…heat of fusion, and the heat of sublimation is the energy necessary to change a solid directly to a vapour, these changes also taking place under conditions of constant temperature and pressure.
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…heat of fusion, and the heat of sublimation is the energy necessary to change a solid directly to a vapour, these changes also taking place under conditions of constant temperature and pressure.
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seawater
Thermal properties
Evaporation below 100 °C and sublimation require more energy per gram than 540 calories. At 20 °C (68 °F) about 585 calories are required to vaporize one gram of water. When water vapour condenses back to liquid water, the latent heat of vaporization is liberated. The evaporation of water from…
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Evaporation below 100 °C and sublimation require more energy per gram than 540 calories. At 20 °C (68 °F) about 585 calories are required to vaporize one gram of water. When water vapour condenses back to liquid water, the latent heat of vaporization is liberated. The evaporation of water from…
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