Xenon - Periodic Table of Videos

BlackRaptor31 Says:

Aug 26, 2009 - Radon is a more reactive noble gas :P

TheCaptainLulz Says:

Sep 18, 2009 - it probably is, but it lasts about 3 days so there isnt much to do chemestry with

PattyMMelt Says:

Sep 20, 2009 - At 1:17 he says there's 40 pounds worth, and I was like "Well why does it look so light?!? He seems to be holding it with no problem!" But then, hurr, I knew he was talking about money How many dollars is 40 pounds?

Turok2evil Says:

Sep 21, 2009 - ohh crap , lol i didn't even think he was talking about currency i thought this was an american video , lol but uhmm in that case it would be about $64 -$65 that shit is expensive x]

grimmkillah Says:

Sep 23, 2009 - 75 dollars=40 pounds

iplop Says:

Sep 25, 2009 - I just looked it up online. (I really wish I could post links on youtube) = / Anyways, type "Military: New Aluminum Windows Stop .50-Caliber Bullet" on google for the story on the lens. As far as the transparent aluminum metal, type "'Hello Computer' -Scientist Create Transparent Aluminum' on google.

wrnchhead76 Says:

Sep 27, 2009 - LOL! That's really funny.

mmaannoollooo Says:

Sep 30, 2009 - k alguien le compre un peine a ese hombre

CysicSystems Says:

Oct 1, 2009 - cool story bro

FLEETCOMfreq Says:

Oct 11, 2009 - aluminium oxide. its aluminium joined chemically with oxygen, creating a transparent material. not aluminium

iplop Says:

Oct 11, 2009 - agreed "Anyways, type "Military: New Aluminum Windows Stop .50-Caliber Bullet" on google for the story on the lens. "

cplai Says:

Oct 11, 2009 - Are you referring to the Star Trek movie when they put two whales in a transparent aluminium tank? But the video says aluminium oxide, not the metal.

cplai Says:

Oct 11, 2009 - The drop of balloons demo is flawed. The balloon sank at different rate because their sizes are different which in turn resulted in different air friction. I remember hearing a famous experiment where Galilio dropped objects of different weight from the leaning town of Pisa to prove that the rate of falling is not depending on the mass but the cross section. Of course, the density of the gas change the buoyancy. But anyway, the two sizes of the balloons introduced an unnecessary variable.

iplop Says:

Oct 12, 2009 - Please at least google "Military: New Aluminum Windows Stop .50-Caliber Bullet" before commenting. I am completely aware that it is not transparent aluminum.

sammyboy1234 Says:

Oct 13, 2009 - big whoop

sammyboy1234 Says:

Oct 13, 2009 - he didnt breathe it in :(

Cream147player Says:

Oct 15, 2009 - I don't think there's really a need to be so analytical over such a basic experiment with such an obvious result.

kenan6346 Says:

Oct 25, 2009 - surely the air resistance would be negligible in this case?

NGC1235 Says:

Oct 30, 2009 - kenan6346: No. The larger surface area of the air-filled balloon would cause it to have to push more atmospheric gases out of its way as gravity tugged on it, slowing it down more than the balloon filled with xenon. On top of that, the atmosphere would buoy up the lighter ballon more than it would the heavy one, causing the larger one to sink more slowly. If the experiment was performed in a vacuum, however, both balloons would fall at the same rate.

hardfi123 Says:

Nov 2, 2009 - 'Ahem, American chemists' WIN

artilistic Says:

Nov 22, 2009 - my car has xenon headlamps

ShervinGetOffMee Says:

Nov 23, 2009 - xenon is 2.5x the density of iron... does that mean a ballon of xenon is 2.5x heavier than a balloon of iron?

thespurginator Says:

Nov 25, 2009 - if the xenon was solid, yes.

ShervinGetOffMee Says:

Nov 25, 2009 - why? it has to be a solid to be heavyer?

thespurginator Says:

Nov 25, 2009 - solids have a more dense molecular structure. while each atom of xenon gas weighs 2.5x that of an atom of iron, the molecules in a gas are approximately 20-40 angstroms apart. whereas in a solid, they are closer to 2-3 angstroms. when gases condense to liquids, the degree of freedom of each atom decreases, condensing the structure as well.