what exactly is "dry ice" ?

Question

i've always heard of it. just never knew what it meant. is the ice like, not made up of waterrr?? i have no clue so please help =]]

Answer 1

Dry Ice is frozen carbon dioxide, a normal part of our earth's atmosphere.
It is the gas that we exhale during breathing and the gas that plants use in photosynthesis. It is also the same gas commonly added to water to make soda water.
Dry Ice is particularly useful for freezing, and keeping things frozen because of its very cold temperature: -109.3°F or -78.5°C. Dry Ice is widely used because it is simple to freeze and easy to handle using insulated gloves.
Dry Ice changes directly from a solid to a gas -sublimation- in normal atmospheric conditions without going through a wet liquid stage. Therefore it gets the name "dry ice."

Answer 2

Dry ice is the genericized trademark for solid carbon dioxide. It is commonly used as a versatile cooling agent.

Dry ice is readily manufactured:
Carbon dioxide is pressurized and refrigerated until it changes into its liquid form.

The pressure is reduced. When this occurs some liquid carbon dioxide vaporizes, and this causes a rapid lowering of temperature of the remaining liquid carbon dioxide. The extreme cold makes the liquid solidify into a snow-like consistency.

The snow-like solid carbon dioxide is compressed into either small pellets or larger blocks of dry ice.

Dry ice is typically produced in two standard sizes: solid blocks and cylindrical pellets. A standard block is most common and will normally be about 30 kg. These are largely used in the shipping industry because they sublime slowly due to a relatively small surface area. The pellets are around 1 cm in diameter and can be bagged easily. This form of dry ice is more suited to small scale use, for example at grocery stores and laboratories. Dry ice is also inexpensive; it costs about US$2 per kilogram

Answer 3

Dry Ice is solidified carbon dioxide. At -78.5 degrees centigrade it turns directly into a gas. Will instantly burn bare skin and should be handled with extreme care. Never place in a glass container, it will create a bomb tht will shatter glass over a large area. Chief use is a refrigerant.

Answer 4

Dry Ice = Frozen carbon dioxide gas.

Answer 5

Frozen carbon dioxide.

Will burn if you touch it, but often used in a punch bowl to produce a steamy foglike effect - good for Halloween!

Click the wikipedia link below for more info...

Answer 6

You are coughing because there isn't enough humidity and you probably have some sinus drainage which is irritating your throat, especially at night. A dry cough is when you cough but bring up no secretions.

Answer 7

dry ice is simply solid carbon dioxide

Answer 8

Frozen CO2

Answer 9

Good question!