Question

what is dry ice in twenty lines

Answer 1

Lots of things that are gases at room temperature can be frozen into liquids or solids at cold temperatures. Ice is just water frozen into a solid. Even though dry ice is called "ice", it's not. Dry ice is actually a gas at room temperature - carbon dioxide - frozen into a solid at about -110 degrees. At ice temperatures, carbon dioxide is a gas - and as you probably know is already in the atmosphere and air you breathe. So if you are playing around with dry ice, you want to make sure to be in a large, well-ventilated room so the carbon dioxide level in the room doesn't get to high as the dry ice melts. By the way, -110 degrees is cold enough to hurt you if you touch it without gloves and definitely shouldn't be tasted (which you probably knew). Something to notice is that dry ice, unlike water, melts directly into a gas without being a liquid. This is called sublimation.There are colder things than dry ice. 70% of all the gas in air is nitrogen. Nitrogen can freeze into a liquid at -320 degrees. Colder than that is liquid helium which has a temperature very close to absolute zero.Thanks for the questions.

Answer 2

Hey there!

Dry ice or dry ice is called carbon dioxide (CO2) in the solid state. It receives this name because, despite resembling normal ice or snow due to its appearance and temperature, when sublimated it leaves no residue of moisture because its base is not water and its natural state is gaseous even at low ambient temperatures. It has a sublimation temperature of -78.5 ° C (at an atmosphere of pressure).

Since it is carbon dioxide, it can also be used to fix metal, to remove floor tiles and to remove warts. It can also be found in tools such as fire extinguishers. One of the main uses of dry ice is to preserve perishable foods. It is also used by ice cream parlours to keep the ice cream they sell cold. In the world of spectacle it is also sometimes used to release at ground level a very visible white vapor, similar to cold fog.

When the pressure under which it is stored is decreased to 1 atmosphere then it changes into its original form (Carbon Dioxide).

Hope it Helps You!