dry ice 1 cb.jpg
Figure 1. This is what dry ice looks like
Dry Ice

What is dry ice?
Dry ice is carbon dioxide is frozen at -109.3 degrees F.(-78 degrees C.) but if you defreeze dry ice it would become its gas form called carbon dioxide or better known as co2. To create dry ice carbon dioxide is first stored in tanks as a liquid and then the creators compress the liquid into dry ice which will melt into a gas at or above a normal room tempature. One cool fact about dry ice is that is that it sublimates faster than the normal ice melts would melt in a room.

dry ice s2.jpg
Figure 2.This is what happens during the process of sublimation.
Sublimation Dry ice can have two states which it can go through, which is
dry ice s1.jpg
Figure 3.When sublimation occurs it will create a fog.
fairly uncommon but sometimes it can skip on of the three states, the state it skips is the liquid state. When it skips the liquid state (and turns straight into a gas from a solid) it is considered to be going through sublimation. Sublimation is the process in which the item doesn’t go through its liquid state, which in this case is when dry ice turns into carbon dioxide without becoming water in other words going through sublimation. Dry ice can be bought because of sublimation; sublimation is a fairly rare ability that few items share. Dry ice is sometimes even used in movies as a smoke or sometimes even just a gas; although it can also be used in a witch’s caldron. It can be used as a prop because it will become carbon dioxide and make it seem that you are really looking at smoke or steam or any other characteristic they can use dry ice to deceive you with. The fog appears from the thermal energy it gets while turning into from its solid form of dry ice into its gas form of carbon dioxide.

Chilling Out
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Figure 4. Dry ice can keep most anything very cold
Most times when you get food that you are supposed to refrigerate when you get the food it will come cold, which is surprising because it is in a warm truck for a long time. Although it can be other things too, dry ice is an important tool to keep many foods cold or at the temperature it is suposed to be at, so dry ice can be used as a refrigerant while moving from one place to another in a truck or just at a home. Dry ice is also a product in stores and its first large sale was to Breyer Ice cream in 1925 and was bought to be used to keep the ice cream cool. Dry ice is used to cool other foods too like meats and popsicles and most other things that get traveled to your house and sometimes at the grocery store. They keep many things other than food; it is also used to keep the inside of a refrigerator cool so the food inside it doesn’t become warm and not at a healthy temperature.

Carbon Dioxide- Carbon dioxide is a naturally occurring chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. Composed- The manner in which such parts are combined or related. Sublimation-is the process of transformation directly from the solid phase to the gas phase without passing through an intermediate liquid phase. Thermal Energy-is the part of the total internal energy of a thermodynamic system or sample of matter that results in the system temperature.
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