Science / Weather / Sublimation: The process of a solid (ice) changing directly into a gas (water vapor), or water vapor changing directly into ice, at the same temperature, without ever going through the liquid state (water). The opposite of crystallization.
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Science / Chemistry / Enthalpy Of Sublimation: The change in enthalpy when one mole of solid vaporizes to form one mole of gas. Enthalpies of sublimation are always positive because vaporization involves overcoming most of the intermolecular attra MORE
Science / Weather / Frost: The covering of ice crystals that forms by direct sublimation on exposed surfaces whose temperature is below freezing. MORE
Science / Chemistry / Crystallization: Production of a purer sample of a substance by slow precipitation of crystals from a solution of the substance. MORE
Science / Periodic Table of Elements / Arsenic (As): Atomic number: 33, Atomic mass: 74.9216 g.mol -1, Electronegativity: 2.0, Density: 5.7 g.cm-3 at 14?°C, Melting point: 814 ?°C (36 atm), Boiling point: 615 ?°C (sublimation), Vanderwaals radius: 0. MORE
Science / Chemistry / Antoine Equation: A simple 3-parameter fit to experimental vapor pressures measured over a restricted temperature range: log P = A - . B, T + C, where A, B, and C are 'Antoine coefficients' that vary from substance to MORE