EGGSPLOSION!!

EGGSPLOSION!!!
 * Materials: **
 * hollowed out egg
 * wooden splint
 * matches
 * HCl
 * Mg strips
 * Erlenmeyer Flask
 * Large test tube
 * test tube clamp and iron stand

When enough air has entered to form a combustible mixture inside the egg, the flame backfires down through the hole and makes a flame with the mixture. Since the reaction is very exothermic, pressure inside the egg increases rapidly and thus makes the egg explode into many pieces. This demo relates to what we learned in class, because it involves a combustion reaction. A combustion reaction as we learned in class is any element that reacts with oxygen to combust. Also the reaction in the demo is both a single replacement reaction and a combustion/synthesis reaction as shown below.
 * Procedure: **
 * 1) Obtain a hollowed out egg. If it is not previously prepared, continue to step 2. If it is prepared, skip to step 7
 * 2) First wash the egg thoroughly
 * 3) With an ice pick or nail, gently tap a small hole (2-3 mm in diam.) in the top (narrower end) of the egg and a slightly larger hole (3-4 mm in diam.)
 * 4) In the bottom. put a wire and stir up the yolk.
 * 5) Over a bowl, blow into the small hole to force the egg’s contents out through the larger hole.
 * 6) Rinse out the inside several times, and allow the egg to dry overnight at room temperature
 * 7) Put a quarter to a half inch of HCl into a large test tube, clamped to an iron ring stand.
 * 8) Put several small strips of Mg into the HCl, and immediately place the egg onto the test tube.
 * 9) Wait a few seconds for all of the oxygen to be emptied from the egg, then quickly (and gently) place a small piece of tape onto the top hole, sealing it.
 * 10) While the Hydrogen is trapped, light a wooden splint quickly.
 * 11) Remove the tape, and immediately place the lit end of the wooden splint over the hole in the egg.
 * 12) BOOM!!!! :)
 * 13) Clean up the pieces
 * Explanation: **The pop is formulated by a small portion of the hydrogen leaking out, mixing with the air immediately above the hole and forming a minute combustible mixture there. The hygrogen gas continues to react with the oxygen formulating a flame. At the same moment, oxygen-containing air is dragged up into the egg through the bottom hole and mixing with the remaining hydrogen there.

1) The technique necessary to generate energy out of hydrogen is very expensive which means that it is not used very often. 2) The most important application for hydrogen is the car 3) Not all combustion reactions release CO2 and water, e.g., the combustion of magnesium metal: 4) Combustion reactions are almost always exothermic (give off heat)
 * **Mg + 2HCl -> H2 + MgCl2**
 * **2 H2 + O2 -> 2 H2O**
 * Interesting Facts:**
 * Interesting Facts:**

The explosion of eggshells was an experiment designed to help military, miners, and demolition crews design explosions. Also the researchers who carried out that experiment hope to use the results to estimate the amount of spacecraft debris in orbit and to analyze mass redistribution following a supernova—a star explosion. Also, Hydrogen used to be used to float blimps because of how light it is. This process was stopped after the Hindenburg incident.
 * How does it relate? **

@http://chemistry.about.com/od/elementfacts/a/hydrogen.htm @http://www.thenakedscientists.com/HTML/content/kitchenscience/garage-science/ @http://library.thinkquest.org/C0110881/application_en.html @http://www.mwt.net/~bionorse/Egg%20splosion.htm [] []
 * Sources: **