Crashing+Can

Materials:
**Procedure:** 1. Rinse the soda can with water and leave about 2 tablespoons of water in the can. 2. Then arrange a bin of cold water. 3. After that, place the can on a stove or a hot plate until you see stteam coming out from the can. 4. Using a tong, pick up the hot can and quickly plunge the can into the bin of cold water. 5. BOOM!!! The can crushes.
 * 1 empty aluminum soda can
 * tongs to handle the hot can
 * a source or heat like a hot plate
 * a clear bowl of cold water

**Explanation:** When the can is being heated, the liquid in the can turns into water vapor (the steam in the experiment). Water vapor is tiny water molecules in a gaseous state. When the liquid turns into water vapor, it pushes all the air molecules out of the can increasing the pressure in the can to the same amount of pressure outside the can (atmospheric pressure). However when the can is immediately put into the bin of cold water, the water vapor cools rapidly and condenses back to a liquid. This action causes less pressure in the can compared to the pressure outside. Since the atmosperic pressure is greater than the pressure in the can; the can crushes.

**Equations involved:** V1/T1 =V2/T2-As the temperature increases, the volume increases. As the temperature decreases, the volume decreases(can crushing). This is called Charles's Law.

P1/T1=P2/T2As the temperature increases pressure increases. As the temperature decreases, the pressure decreases. This is called Gay-Lussac's Law.

** No Way!: ** The Real Life Can Crush A group of workers had thier tank car steam cleaned. The interior of the tank car washed out and cleaned with steam. All the outlet values were shut and car was sealed... Later that day, the tank car crushed as it cooled (like the crushing can in this experiment).



Flat tires during winter Deflated bicycle tires during winter Basketballs in cold temperature
 * Everyday life: **

Websites: "Can Crush Demo" Delta Collage, 09. Web 20 Jan 2010. <[]>. //WikiHow - The How-to Manual That You Can Edit//. Media wikki, 09. Web. 20 Jan. 2010. <[|http://www.wikihow.com]>.