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metal prints beaker metal prints carbon dioxide metal prints chemistry metal prints co2 metal prints dry ice metal prints heat metal prints physics metal prints sublimation metal prints temperature metal prints test tube metal prints thermal metal prints thermodynamics metal prints vapour metal prints

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Sublimation of dry ice. A fog-like vapour spills out of a test tube containing dry ice, and pours into a glass beaker. Sublimation is the conversion of a solid directly to a vapour state by heating. Dry ice is solid carbon dioxide. Carbon dioxide is a colourless gas at room temperature but becomes a liquid under compression; if the liquid is allowed to expand rapidly to atmospheric pressure, it cools suddenly and freezes to dry ice. Dry ice sublimes (turns straight into a gas from the solid state) at -78.5 degrees Celsius (195 degrees Kelvin). If mixed with water it sublimes, as seen here, producing thick clouds of fog.

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