Dry ice
Dry ice is a genericized trademark for solid ('frozen') carbon dioxide. The term was coined in 1925.
Related Topics:
Genericized trademark - Carbon dioxide - 1925
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Dry ice at normal pressures does not melt into liquid carbon dioxide but rather sublimates directly into carbon dioxide gas at −78.5°C (−109.3°F). Hence it is called "dry ice" as opposed to normal "wet" ice (frozen water).
Related Topics:
Sublimates - °C - °F - Ice
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Dry ice is produced by compressing carbon dioxide gas to a liquid form, removing the heat produced by the compression (see Charles' law), and then letting the liquid carbon dioxide expand quickly. This expansion causes a drop in temperature so that some of the CO2 freezes into "snow" which is then compressed into pellets or blocks.
Related Topics:
Charles' law - Temperature
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~ Table of Content ~
| ► | Introduction |
| ► | Uses |
| ► | Handling |
| ► | Physical Characteristics |
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