This website is a portfolio for my schoolwork in Mueller Charter Leadership Academy (MCLA) in San Diego, California.
Almost everything I do in school will end up on this website.
Simon Handford
English 8
Mr. Stringham
10/9/14
Dry Ice Information – Second Draft
This essay will be providing information about ice. Specifically, DRY ice. Dry ice is frozen carbon dioxide, and sublimates directly from its solid form to its gas form. In this essay, I will be telling you general dry ice information, about the history of dry ice, and the uses of dry ice. Dry ice is, and always has been, an important resource.
Dry ice is frozen CO2 (Carbon Dioxide). Dry ice blocks get to temperatures around -109.3 degrees Fahrenheit, and dry ice can cause severe burns if in contact with skin for too long. Dry ice goes directly from its solid form to its gas form in a process called sublimation, and is commonly called dry ice for this reason. Dry ice will normally sublimate at a rate of 5 to 10 pounds every 24 hours. According to dryiceinfo.com, “Dry ice manufacturing starts with liquid carbon dioxide held under pressure (300 psi) in bulk storage vessels. To begin making dry ice, the liquid C02, is sent through an expansion valve into an empty chamber where under normal atmospheric pressure it flashes into C02 gas. This change from liquid to gas causes the temperature to drop quickly. About 46% of the gas will freeze into dry ice snow. The rest of the C02 gas, is released into the atmosphere or recovered to be used again. The dry ice snow is then collected in a chamber where it is compressed into blocks, or various sized pellets”.
According to dryiceinfo.com, “It is generally accepted that French chemist, Thilorier was the first to record the appearance of solid CO2 - dry ice. In 1835 he opened a cylinder with a large amount of liquid carbon dioxide to observe it in liquid form. Enough of it evaporated to leave a solid dry ice block at the bottom of the container”. In 1925, Prest Air Devices began making devices using CO2, however only their fire extinguisher was good enough to sell. In 1925 (The same year) they built a dry ice production plant to attempt to sell dry ice to the railroad companies as alternative cooling; dry ice is a lot colder than normal ice. Prest Air Devices was sold and became DryIce Corporation of America, who, in 1932, were selling to the railroad companies, who already had 12 cars equipped to handle dry ice. In 1926 ice cream companies began using dry ice instead of the earlier used “brine ice” to keep their products cool. By 1927 even Breyers Ice Cream was in on it.
There are many uses to dry ice. Putting it in hot water makes a cold white fog, alike to the fog used in horror movies or with sets during Halloween. It’s also used in dry ice blasting, similar to sand blasting, but reportedly does not damage the surface of the object(s) you are cleaning. It’s also commonly used to make soda! You can attract mosquitoes with dry ice, and dry ice is sometimes used in mosquito traps for that reason. Other than that, you can get rid of gophers with it, make root beer at home, use it as a chemical retardant, for delaying flowers blooming, to shrink small dents on your car, and for many, MANY more things.
Dry ice is a very important resource. In paragraph 1, basic information such as the temperature of dry ice and dry ice sublimation rates was provided, and in paragraph 2 the known history of dry ice was given. Finally, in paragraph 3, several uses of dry ice, including making fog, cleaning, and mosquito trapping, were provided. To summarize, this essay included basic dry ice information, the history of dry ice, and several uses.
Works Cited
"Dry Ice Information - All about Dry Ice." Dry Ice Information - All about Dry Ice. 13
June 14. Web. 02 Oct. 2014.
"How Does Dry Ice Work?" HowStuffWorks. HowStuffWorks.com. Web. 03 Oct. 2014.
English 8
Mr. Stringham
10/9/14
Dry Ice Information – Second Draft
This essay will be providing information about ice. Specifically, DRY ice. Dry ice is frozen carbon dioxide, and sublimates directly from its solid form to its gas form. In this essay, I will be telling you general dry ice information, about the history of dry ice, and the uses of dry ice. Dry ice is, and always has been, an important resource.
Dry ice is frozen CO2 (Carbon Dioxide). Dry ice blocks get to temperatures around -109.3 degrees Fahrenheit, and dry ice can cause severe burns if in contact with skin for too long. Dry ice goes directly from its solid form to its gas form in a process called sublimation, and is commonly called dry ice for this reason. Dry ice will normally sublimate at a rate of 5 to 10 pounds every 24 hours. According to dryiceinfo.com, “Dry ice manufacturing starts with liquid carbon dioxide held under pressure (300 psi) in bulk storage vessels. To begin making dry ice, the liquid C02, is sent through an expansion valve into an empty chamber where under normal atmospheric pressure it flashes into C02 gas. This change from liquid to gas causes the temperature to drop quickly. About 46% of the gas will freeze into dry ice snow. The rest of the C02 gas, is released into the atmosphere or recovered to be used again. The dry ice snow is then collected in a chamber where it is compressed into blocks, or various sized pellets”.
According to dryiceinfo.com, “It is generally accepted that French chemist, Thilorier was the first to record the appearance of solid CO2 - dry ice. In 1835 he opened a cylinder with a large amount of liquid carbon dioxide to observe it in liquid form. Enough of it evaporated to leave a solid dry ice block at the bottom of the container”. In 1925, Prest Air Devices began making devices using CO2, however only their fire extinguisher was good enough to sell. In 1925 (The same year) they built a dry ice production plant to attempt to sell dry ice to the railroad companies as alternative cooling; dry ice is a lot colder than normal ice. Prest Air Devices was sold and became DryIce Corporation of America, who, in 1932, were selling to the railroad companies, who already had 12 cars equipped to handle dry ice. In 1926 ice cream companies began using dry ice instead of the earlier used “brine ice” to keep their products cool. By 1927 even Breyers Ice Cream was in on it.
There are many uses to dry ice. Putting it in hot water makes a cold white fog, alike to the fog used in horror movies or with sets during Halloween. It’s also used in dry ice blasting, similar to sand blasting, but reportedly does not damage the surface of the object(s) you are cleaning. It’s also commonly used to make soda! You can attract mosquitoes with dry ice, and dry ice is sometimes used in mosquito traps for that reason. Other than that, you can get rid of gophers with it, make root beer at home, use it as a chemical retardant, for delaying flowers blooming, to shrink small dents on your car, and for many, MANY more things.
Dry ice is a very important resource. In paragraph 1, basic information such as the temperature of dry ice and dry ice sublimation rates was provided, and in paragraph 2 the known history of dry ice was given. Finally, in paragraph 3, several uses of dry ice, including making fog, cleaning, and mosquito trapping, were provided. To summarize, this essay included basic dry ice information, the history of dry ice, and several uses.
Works Cited
"Dry Ice Information - All about Dry Ice." Dry Ice Information - All about Dry Ice. 13
June 14. Web. 02 Oct. 2014.
"How Does Dry Ice Work?" HowStuffWorks. HowStuffWorks.com. Web. 03 Oct. 2014.