How does dry ice keep the temperature cool?

Answer 1

Dry ice is solid carbon dioxide. For carbon dioxide to become solid within Earth's atmospheric pressure, it must be at around -72oC. This makes dry ice useful as a coolant in some areas.

Dry ice sublimes; that is, it passes from the solid state to the gas state, without becoming a liquid (when heated beyond -72oC). This makes it useful in producing a foggy effect in theatre or at events.

Answer 2

Dry ice is solid carbon dioxide. Solid carbon dioxide is somewhat unique in that moves freely from the solid to gaseous phase at atmospheric pressure. Only at much higher pressures will liquid CO2 form.

Answer 3

Dry ice is produced in a planet, usually not far from an industrial site. A lot of dry ice is made from recycled CO2 byproducts from industrial plants. Anyways, on to what you want to know.

Dry ice is made by taking CO2 gas, purifying it, cooling it, and compressing it. This creates liquid CO2. When liquid CO2 is released from pressure, it creates dry ice snow. This is done in a special chamber, then immediately smashed together using a block press. This creates the dry ice that everyone is used to seeing and playing with.

Answer 4

Dissipates into a gas . dry ice is solid, frozen nitrogen, so at room temperature it dissipates into a white "smoke" (actually nitrogen vapour).

Dry ice is solid frozen carbon dioxide! The white "smoke" is actually water vapor condensing out of the air by the cold carbon dioxide into tiny droplets or ice crystals forming a cloud. At normal room temperature, dry ice will slowly sublimate. This means that it will turn from a solid to a gas. BTW, this is CO2 gas. Be careful to always use in a well ventilated room. CO2 gas can be dangerous.

Answer 5

Dry ice sublimates (turns from solid directly to gas). It turns in to CO2 gas to be specific.

Note: This is why a rule of dry ice is, always use in a well ventilated area. CO2 gas could cause asphyxiation.

Answer 6

Dry ice is solid carbon dioxide that sublimates, meaning it changes from a solid to a gas without becoming a liquid. When dry ice is placed in a container with items that need to stay cold, it absorbs heat as it sublimates, creating a cooling effect that helps maintain a low temperature.

Answer 7

Dry ice is frozen CO2

Dry ice will sublimate (solid directly to gas)

Ice will melt

Answer 8

Dry ice is composed of a different substance than water. It needs to evacuate more energy than water to freeze, but in turn needs more to heat, so it stays cold longer than water.