Dry ice, which is solid carbon dioxide (CO2) at a temperature of around -78.5 degrees Celsius (-109.3 degrees Fahrenheit), does not melt in the same way as regular ice. Instead of transitioning from a solid to a liquid, dry ice undergoes a process called sublimation, where it directly converts from a solid to a gas.
When exposed to warmer temperatures, dry ice sublimates rapidly, creating a dense, white fog of carbon dioxide gas. It is this sublimation process that makes dry ice a popular choice for creating special effects, such as fog, in various applications.
If you place dry ice outside, its sublimation will be accelerated due to the warmer temperatures, and it will sublimate faster than if it were stored in a colder environment. However, the rate of sublimation will still depend on factors such as the temperature, the amount of dry ice, and the surrounding conditions.
When handling dry ice, it is important to take safety precautions. Dry ice is extremely cold and can cause frostbite if it comes into direct contact with the skin. It is recommended to handle dry ice with insulated gloves or tongs and to avoid sealing it in airtight containers as the build-up of pressure from the released carbon dioxide gas could cause the container to rupture.
If you plan to use dry ice outdoors, make sure to follow safety guidelines and local regulations regarding its use. Also, consider the environmental impact of releasing large amounts of carbon dioxide gas into the atmosphere.