Heat of fusion | chemistry | Britannica (original) (raw)
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carbon group elements
In carbon group element: Crystal structure …points, boiling points, and decreasing heat 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… Read More
energy transfer
In heat: Heat as a form of energy …a liquid is called the 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. Read More
freezing point
In freezing point The heat of fusion (see thermal fusion), the heat that must be applied to melt a solid, must be removed from the liquid to freeze it. Some liquids can be supercooled—i.e., cooled below the freezing point—without solid crystals forming. Putting a seed crystal into a supercooled… Read More
In liquid: Transitions between states of matter …freezing point, and their latent heat of fusion is released in the freezing process. Heating a solid provides the particles with the heat of fusion necessary to allow them to escape one another’s influence enough to move about in the liquid state. Further heating provides the liquid particles with their… Read More
ocean temperatures
In seawater: Thermal properties …0 °C is the latent heat of fusion and is 80 calories per gram of ice. Water’s latent heat of fusion is the highest of all common materials. Because of this, heat is released when ice forms and is absorbed during melting, which tends to buffer air temperatures as land… Read More
physical state changes
In latent heat …a liquid is called the heat of fusion; that associated with vaporizing a liquid or a solid or condensing a vapour is called the heat of vaporization. The latent heat is normally expressed as the amount of heat (in units of joules or calories) per mole or unit mass of… Read More
