potassium 音标拼音: [pət'æsiəm]
n . 钾[金属元素]
钾[金属元素]
potassium n 1 :
a light soft silver -
white metallic element of the alkali metal group ;
oxidizes rapidly in air and reacts violently with water ;
is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite [
synonym : {
potassium }, {
K }, {
atomic number 19 }]
Potassium \
Po *
tas "
si *
um \,
n . [
NL .
See {
Potassa }, {
Potash }.]
(
Chem .)
An Alkali element ,
occurring abundantly but always combined ,
as in the chloride ,
sulphate ,
carbonate ,
or silicate ,
in the minerals sylvite ,
kainite ,
orthoclase ,
muscovite ,
etc .
Atomic weight 39 .
0 .
Symbol K (
Kalium ).
[
1913 Webster ]
Note :
It is reduced from the carbonate as a soft white metal ,
lighter than water ,
which oxidizes with the greatest readiness ,
and ,
to be preserved ,
must be kept under liquid hydrocarbons ,
as naphtha or kerosene .
Its compounds are very important ,
being used in glass making ,
soap making ,
in fertilizers ,
and in many drugs and chemicals .
[
1913 Webster ]
{
Potassium permanganate },
the salt {
KMnO4 },
crystallizing in dark red prisms having a greenish surface color ,
and dissolving in water with a beautiful purple red color ; --
used as an oxidizer and disinfectant .
The name {
chameleon mineral }
is applied to this salt and also to potassium manganate .
{
Potassium bitartrate }.
See {
Cream of tartar },
under {
Cream }.
[
1913 Webster ]
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Potassium: Sources, Deficiencies, Overdose, Treatment More - Healthline Too little potassium can lead to serious health consequences, but too much can also cause temporary or long-term health problems Learn how potassium affects your health
Potassium: Benefits Side Effects - Cleveland Clinic Health Essentials Potassium is an essential mineral that acts as an electrolyte It helps your muscles contract, balances fluid in your body and helps offset sodium
Potassium - Wikipedia When Humphry Davy first isolated the pure element using electrolysis in 1807, he named it potassium, which he derived from the word potash The symbol K stems from kali, itself from the root word alkali, which in turn comes from Arabic: القَلْيَه al-qalyah 'plant ashes'
Potassium - Health Professional Fact Sheet - Office of Dietary . . . Potassium overview for health professionals Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here
Potassium: Benefits, Deficiency, Food Sources and Side Effects As one of the seven essential macro minerals, potassium holds an extremely high significance in the human body Similar to sodium and calcium, potassium is also an electrolyte It is said to be an electrolyte because it reacts with water to produce positively charged ions