When dry ice is put into water, it will absorb a lot of heat, make the local temperature drop rapidly, and make the water vapor in the surrounding air condense into small water droplets, thus producing fog.

Dry ice is solid carbon dioxide with a temperature of -78.5℃. When it is heated into gas, it condenses the water vapor in the nearby air into countless small water droplets, which is white fog. If you pour hot water on dry ice, the white fog will be thick, just like a fairyland. This method is often used to create a fairyland on the stage.

Because the pressure generated by sublimation of dry ice will cause explosion, it is not allowed to store dry ice in a closed incubator. An incubator with good insulation effect can slow down the sublimation of dry ice.

Extended data:

Use of dry ice

First, the field of refrigerated transportation?

1, cryogenic refrigeration for medical use and cryogenic transportation of special drugs such as plasma and vaccines. ?

2. Long-distance and short-distance transportation of electronic cryogenic materials and precision components. ?

3. Fresh-keeping transportation of high-grade foods such as high-grade beef and mutton. ?

Second, the entertainment field?

Widely used in stage, theater, film and television, wedding, celebration, party and so on. There are countless special effects classic plays made of dry ice in China and even in the world. ?

Third, the field of fire protection?

Dry ice is used to put out fires, such as some low-temperature fire extinguishers, but the application of dry ice in this respect is less, that is, the market level is low.

Baidu encyclopedia-dry ice