•What is dry ice?
•Where is it used?
Can it be converted to liquid state? Why?
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Carbon dioxide(CO2) in its solid formis known as Dry ice. It is Dry because when it is exposed to normal temperatures(which is higher than its own temperature), unlike water, it is directly converted into fumes of Carbon dioxide, and not into any liquidmaterial.
swathi37:
and..where can it be used??
Dry ice, sometimes referred to as "cardice" (chiefly by British chemists), is the solid form of carbon dioxide. It is used primarily as a cooling agent. Its advantages include lower temperature than that of water ice and not leaving any residue (other than incidental frost from moisture in the atmosphere).
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Unlike regular ice, dry ice doesn't melt into a liquid as it warms up. Instead, it converts directly back into its gaseous form in a process known as sublimation. At -109° F, dry ice is also significantly colder than the 32° F surface temperature of regular ice.
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