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Potassium is the chemical element in the periodic table. It has the symbol K (L. kalium) and atomic number 19. The name "potassium" comes from the word "potash", as potassium was first isolated from potash. Potassium is a soft silvery-white metallic alkali metal that occurs naturally bound to other elements in seawater and many minerals. It oxidizes rapidly in air and is very reactive, especially toward water. In many respects, potassium and sodium are chemically similar.
Notable characteristics
With a density less than that of water, potassium is the second least dense metal after lithium. It is a soft, low-melting solid that can easily be cut with a knife. Freshly cut potassium is silvery in appearance but it quickly tarnishes. It oxidizes in air rapidly and thus should be protected for storage. Often samples are maintained under an inert medium such as kerosene.
Similar to other alkali metals but more so than Li and Na, potassium reacts violently with water producing hydrogen. The reaction is sufficiently exothermic that the evolved hydrogen gas ignites. Potassium and its compounds emit a violet color in a flame. This fact is the basis of the flame test for the presence of potassium in a sample.
More on [ Potassium ]
...due to lack of potassium. FYI, anorexia has the highest death rate of ANY mental illness.
KimberlyFitness (Kimberly Bither) Mon, 21 Dec 2009 11:58:01 -0000
...due to lack of potassium. FYI, anorexia has the highest death rate of ANY mental illness.
Potassium dinner at Eastwood! :D -Update via SMS for FREE using http://isip.ph
maisieessh (Maisie Magnaye) Mon, 21 Dec 2009 10:27:02 -0000
Potassium dinner at Eastwood! :D -Update via SMS for FREE using http://isip.ph
@JudeCrane it wasn't drugs, it was anorexia...her heart gave out from dehydration and lack of potassium.
MissSharonCobb (Sharon Cobb) Mon, 21 Dec 2009 09:50:42 -0000
@JudeCrane it wasn't drugs, it was anorexia...her heart gave out from dehydration and lack of potassium.
@PoshLopez or anorexia related... Lack of potassium and such. Or aneurysm... She was karazy...
coleykane (nicole kane) Mon, 21 Dec 2009 09:45:57 -0000
@PoshLopez or anorexia related... Lack of potassium and such. Or aneurysm... She was karazy...
You're low on potassium
maxadamson (Max Adamson) Mon, 21 Dec 2009 09:21:25 -0000
You're low on potassium
#omgfacts Aspirin is lethal to cats, Penicillin is lethal to Guinea Pigs and Owls can consume potassium cyanide without dying.
karinotcarrie (Kari Derezinski) Mon, 21 Dec 2009 08:14:09 -0000
#omgfacts Aspirin is lethal to cats, Penicillin is lethal to Guinea Pigs and Owls can consume potassium cyanide without dying.
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