Try getting you or your pet sprayed by a skunk , then say that . :D
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the skunk sprays a particular chemical that causes the stink. the chemical floating in the air eventually dissipates and disperses to such a low concentration that you can no longer smell it. eventually, it breaks down and stops smelling all together. if you get some of the chemical on you, that's a whole lot worse- not only is it not going to disperse because it is stuck to you, water doesn't do a good job of taking it off. in fact it will make it worse. eventually, the skunk chemicals will break down and stop smelling. however, if it gets wet, it reactivates and starts stinking again. evil evil stuff.
The smell, which is most likely some nitrogen compound, becomes a gas due to sublimation I think. Haven't taken enough chemistry yet:pinch:
:lol: sublimation. Sublimation is change in phase from solid to gas.
There are several reasons smells go away, the most notable being the Second Law of Thermodynamics (all things in the universe tend to disorder). The smell dissipates because the individual molecules "want" to get away from each other. The force from the wind definitely helps as well. Also, the reason we don't smell it forever is because the sensory nerves are transient--so you don't smell that fart 3 weeks later and have trouble smelling other things.
Also, molecules don't simply "break down." They may form new compounds with other molecules if the First Law of Thermodynamics (energy is conserved) allows it (i.e. they will react exothermically and come to a lower Energy state). The only way to "break down" a molecule is to photolyze it with high-energy photons or bombard it with neutrons etc.
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Change your profile to Forum Chemist immediately.
Did you really work for Saddam? :blink: