Design+&+Build

Title of Demonstration: The Shower of Dry Ice Bubbles Materials: · Dry ice · Gloves · Pipe shower · Hammer · Warm water · Soap · Towels Step by Step Procedure 1. Put together the pipe shower; however, do not connect the spigot part to the rest. Fill the shower head with warm water. 2. Break the dry ice into smaller parts and shove them into the main part of the shower where the water is located. 3. Prepare a bowl of dish-washing soap that is almost full. 4. Attach the spigot part to the main part. Dip the end part of the spigot in the bowl of soap. Explanation of chemistry The water is at a higher temperature than the dry ice. When water is combined with dry ice parts, the dry ice dissipates into the air of harmless carbon dioxide, or it sublimates, going from a solid to a gas. Clouds of fog are created. This is comparable to regular bubbles that form from regular bubble bottles: the soapy solution in the hole of the stick “captures” your breath as you blow at the soapy hole. Practical Applications/Principles Dry ice is used to preserve food like ice cream in the absence of mechanical cooling. This can also be expressed as “flash-freezing” food. It is also used to produce fog. Plumbers also use a technique in which dry ice is used to freeze the water in pipes so they can work on the pipes without shutting the water off.
 * Demo || Group Members || Description/Specs/Pics ||
 * CO2 Slopes at Night || Ray Roman, Anas Ratani, Zaineb Ghouse ||  ||
 * CO2 Bubble shower || Angela Wong, Angela Lewosz, Jessica Chen ||  ||
 * Caution: Gloves are worn when dealing with dry ice. It is extremely and damagingly cold.**

http://chemistry.about.com/cs/howtos/a/aa012004.htmmedia type="youtube" key="pP_lZaOchE0" height="245" width="357"http://educatingrisa.com/2010/02/02/mad-science-dry-ice-the-states-of-matter/ .
 * Water Rocket || Khaja Ahmed, Justin Hofmann, Sara Beth Murphy || Water Rocket ||
 * Powerful Potato Cannon || Nick, Marty, Dipesh ||  ||
 * Smoke Ring Cannon || Adam Ratner, Krizia Pallarca, Joanna Lyszowski || @Smoke Cannon ||