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--- demonstrations:4_thermodynamics:4c_change_of_state:ice_bomb:start [2019/02/14 23:33] – external edit 127.0.0.1
+++ demonstrations:4_thermodynamics:4c_change_of_state:ice_bomb:start [2019/05/24 23:39] (current) – demoroom
@@ Line 1: / Line 1: @@
 ====== Ice Bomb ======
-{{tag> needs_review untagged unlocated}}
+{{tag> change_of_state thermodynamics explosion unlocated}}
 <WRAP box right>
@@ Line 11: / Line 11: @@
 ===== Description =====
-Change of state in an explosive way!    Classes Used: PHYS 153
+Consists of a cast iron 'flask' with a plug that can be screwed in. Single use. Used with liquid nitrogen,
-Change of state
 ===== Purpose =====
+To demonstrate the expansion of water when it changes state. Illustrate the explosively powerful forces involved in this state change.
-To demonstrate change of state
 ===== Apparatus =====
+  * Cast iron 'ice bomb'
-Cast iron bombs
+  * Bucket of water
-Water
+  * Liquid nitrogen
-Liquid nitrogen
+  * Gloves
-Gloves
+  * 1/4" wrench / adjustable wrench
-Pliers
+  * Teflon plumbing tape
-Thread tape
+  * [[demonstrations:9_equipment:blast_shield:start|Blast Shield]]
-Water jug
-Blast Shield (See Blast Shield in catalog for more details)
 ===== Setup =====
+  - Apply thread tape to threads on the cast iron bomb cap
-Apply thread tape to threads on the cast iron bomb cap
+  - Submerge the ice bomb in the bucket of water and tighten the plug in while it is fully submerged, ensuring no bubbles are trapped inside. Use the wrench to tighten the plug as much as possible.
-Fill the ice bomb full of water and securely screw the lid shut with the pliers. To insure that there is no air inside of the ice bomb fill a bucket of water and tighten the bomb while it is submerged
+  - Cut the top off a 2L pop bottle so it creates a container for the liquid nitrogen (make it as tall as possible)
-Try to get all the air out
+  - Place bomb inside the container and add liquid nitrogen until the container is full (more is better so as to make sure the bomb explodes)
-Cut the top off a 2L pop bottle so it creates a container for the liquid nitrogen (make it as tall as possible)
+  - Place the protective cover over the apparatus and wait for the explosion.
-Place bomb inside the container and add liquid nitrogen until the container is full (more is better so as to make sure the bomb explodes)
-Place the protective cover over the apparatus and wait for the BOOM!
 ===== Notes =====
-This is a dangerous demonstration
+<WRAP center danger 60%>
-Please keep it a distance away from the students and ask for assistance from demo staff
+**This is a dangerous demonstration.**
+Please keep it a distance away from the students and ask for assistance from demo staff.
+</WRAP>
-Updated on: 06/19/13
 <WRAP group>
 <WRAP half column>