Dry ice is solid carbon dioxide with the chemical formula CO₂.

The daily exposure of our people includes using dry ice to create stage smoke, using dry ice to freeze fresh food, using dry ice to artificially rain, and using dry ice to clean carbon deposits in car engines.

Dry ice, if it is made into particles or blocks of various sizes, and then a dry ice cleaning machine can be used to clean many machines and equipment, including the above-mentioned cleaning of carbon deposits in automobile engines, the commercial value of this piece is very huge.

How does dry ice change from gaseous carbon dioxide to solid carbon dioxide?

Under high pressure, specifically under the pressure of 6250.5498 kPa, carbon dioxide is liquefied into a colorless liquid, and then rapidly solidified under low pressure to obtain solid carbon dioxide.

As shown in the figure, dry ice is a white solid, the melting point of dry ice is -78.5°C, and the boiling point is -57°C.

Be careful not to get frostbitten by dry ice, you will need protective gloves.