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What Does Carbon Dioxide Look Like?

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Kyoko Katayama answered
Carbon dioxide at room temperature and air pressure is a colorless gas; it doesn't look like anything.  Liquid carbon dioxide looks like water.  Solid carbon dioxide (dry ice) looks like smoking ice.  If you leave a piece of dry ice out on a table top, it will sublimate, that is, it will change from a solid state to a gaseous state without going through a liquid state.  Both liquid and solid carbon dioxide are produce by application of pressure and the draining off of the resulting heat of compression.

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