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Why Does Dry Ice Burn?
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Transcript
Why Does Dry Ice Burn?
Chemical Properties
What is Dry Ice?
Does It Actually Burn?
Dry ice is the solid form of carbon dioxide comprising of two oxygen atoms bonded to a single carbon atom.
- It is colorless, non-flammable, and slightly acidic.
- non-polar
- The density of dry usually ranges between about 1.4 and 1.6 g/cm3
- If you hold a piece of dry ice too long, it feels like it is burning your skin. Your skin isn't actually burning, though. What is actually happening is that the dry ice is freezing your skin.
- The reason that freezing and burning can feel the same is because touching things that are very cold can do the same thing to your cells as touching things that are very hot.
Phase Changes
DANGER!
Uses
At -56.4 degrees Celsius, dry ice changes from a solid to a gas called sublimation. The opposite process called deposition is where CO2 changes from a gas to solid.
- Transporting plants
- Food storage
- Dents
- Home made root beer
- Mosquitoes
- Wells
- Oil industry
- Too much carbon dioxide gas can cause asphyxiation and even death
- The dry ice will actually kill the skin upon contact
- It can burn your esophagus and cause stomach damage
Temperature
Dry ice is -109.3 degrees Fahrenheit or -78.5 degrees Celsius.
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