Difference Between Similar Terms and Objects

Difference Between Ice and Dry Ice

ice-pdIce vs. Dry Ice

People often see both regular ice and dry ice as the same forms of ice. This is not surprising, because they really look the same when you just simply take a look at the two ice forms. Nevertheless, although both ice are used for cooling purposes, they are still very different from each other in various aspects.

Foremost, regular ice and dry ice differ in the way they are made, or in their overall structure. This means that regular ice is made by freezing water at freezing point temperatures. Dry ice, on the contrary, is made by the compression of CO2 (carbon dioxide gas) using very high pressures. Hence, regular ice, in its chemical form, regardless of its state of matter, is known as H2O, whereas dry ice is CO2 (the solid form of CO2 gas, literally).

Secondly, both ice types differ in the manner that they can be liquefied. With regular ice, you usually need more energy in the form of heat in order to melt it. 100 degrees Celsius, for example, will easily do the trick. Moreover, by lowering the overall atmospheric pressure, one can already melt dry ice. Nevertheless, dry ice goes from its solid state to its gaseous from in the process of sublimation.

In terms of freezing points, regular ice usually becomes an ‘ice’ when it reaches 32 degrees Fahrenheit, or about  0 degrees centigrade. Dry ice forms at negative 109.3 degrees Fahrenheit; a temperature that is a lot cooler than the freezing point of ordinary water.

Regular ice can also be used by humans in their beverages. Dry ice is usually used for cooling in shipping, and preserving fruits like grapes, most especially after a harvest; whereas regular ice is a coolant for regular foods and beverages. In this connection, it must also be made known that dry ice must not be used to cool your regular drinks, because it may prove detrimental to your health.

In summary, regular ice and dry ice differ in the following aspects:

1. In terms of chemical structure, ice is H20, whereas dry ice is CO2.

2. Regular ice can be melted by using heat, as opposed to lowering the atmospheric pressure to melt dry ice.

3. Ice can readily be ingested by humans, whereas dry ice is ordinarily not meant for ingestion (they are somewhat life threatening when eaten).

4. Dry ice needs a much lower temperature to become frozen as opposed to regular ice.

Sharing is caring!

Search DifferenceBetween.net :

Email This Post Email This Post : If you like this article or our site. Please spread the word. Share it with your friends/family.


  1. Good description

  2. Dear,
    Does dry ice can cold a room temperature. If can, then what is the easy process of??

  3. Please correct the freezing point of water in your write up. It’s not 14 deg Celsius as you state but 0 deg. The whole reason why Celcius is also referred as the centigrade temperature scale is because the freezing point of water was defined as zero and the boiling point at 100 deg.

  4. Is dry ice toxic to human

Leave a Response

Please note: comment moderation is enabled and may delay your comment. There is no need to resubmit your comment.

Articles on DifferenceBetween.net are general information, and are not intended to substitute for professional advice. The information is "AS IS", "WITH ALL FAULTS". User assumes all risk of use, damage, or injury. You agree that we have no liability for any damages.

See more about : , ,
Protected by Copyscape Plagiarism Finder