Difference between revisions of "Potassium"
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| − | {{Element | name=Potassium | symbol=K | anumber=19 | amass=39.10 amu | state=solid | class=Alkali metal | cstructure=Body-Centered Cubic | color=Silver | date=1807 | discname=[[Davy, Sir Humphrey ]] | origname=From the Latin ''Kalium'' | uses=important biological role, and used in numerous industrial processes | obtained=sylvite, sylvinite, carnallite }} | + | {{Element | name=Potassium | symbol=K | anumber=19 | amass=39.10 amu | state=solid | class=Alkali metal | cstructure=Body-Centered Cubic | color=Silver | date=1807 | discname=[[Davy, Sir Humphrey]] | origname=From the Latin ''Kalium'' | uses=important biological role, and used in numerous industrial processes | obtained=sylvite, sylvinite, carnallite }} |
'''Potassium''' is an [[element]]<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> in the [[alkali metal]]s class of the [[periodic table]]. It is so chemically active that it is never found free (in elemental form) in nature. In its elemental form, it reacts with water, forming potassium hydroxide and [[hydrogen]] gas, so violently that the hydrogen usually catches fire. It reacts with the [[halogen]]s to make halides like [[potassium chloride]]. | '''Potassium''' is an [[element]]<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> in the [[alkali metal]]s class of the [[periodic table]]. It is so chemically active that it is never found free (in elemental form) in nature. In its elemental form, it reacts with water, forming potassium hydroxide and [[hydrogen]] gas, so violently that the hydrogen usually catches fire. It reacts with the [[halogen]]s to make halides like [[potassium chloride]]. | ||
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The radioactive decay of potassium provides a method of [[radiometric dating]] called [[potassium-argon dating]] that is used to calculate the ages of volcanic rocks. | The radioactive decay of potassium provides a method of [[radiometric dating]] called [[potassium-argon dating]] that is used to calculate the ages of volcanic rocks. | ||
| − | ==See | + | ==See also== |
* [[List of gardening topics]] | * [[List of gardening topics]] | ||
* [[Permaculture]] - Permanent agriculture | * [[Permaculture]] - Permanent agriculture | ||
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[[Category:Permaculture]] | [[Category:Permaculture]] | ||
[[Category:Plants]] | [[Category:Plants]] | ||
| − | [[Category : Soil]] | + | [[Category:Soil]] |
| − | {{ | + | {{Periodic table}} |
Revision as of 12:53, June 23, 2016
| Potassium | |
|---|---|
| Properties | |
| Atomic symbol | K |
| Atomic number | 19 |
| Classification | Alkali metal |
| Atomic mass | 39.10 amu |
| Other Information | |
| Date of discovery | 1807 |
| Name of discoverer | Davy, Sir Humphrey |
| Name origin | From the Latin Kalium |
| Uses | important biological role, and used in numerous industrial processes |
| Obtained from | sylvite, sylvinite, carnallite |
Potassium is an element[1] in the alkali metals class of the periodic table. It is so chemically active that it is never found free (in elemental form) in nature. In its elemental form, it reacts with water, forming potassium hydroxide and hydrogen gas, so violently that the hydrogen usually catches fire. It reacts with the halogens to make halides like potassium chloride.
Its existence as "potash" or "vegetable alkali" (potassium carbonate), "caustic potash" (potassium hydroxide), etc., had long been known, but it was not isolated as an element until 1807, by Sir Humphrey Davy. It was isolated by electrolysis of potassium hydroxide.
The radioactive decay of potassium provides a method of radiometric dating called potassium-argon dating that is used to calculate the ages of volcanic rocks.
See also
- List of gardening topics
- Permaculture - Permanent agriculture
- Soil fertility - nitrogen, phosphorus, potassium
References
- ↑ Wile, Dr. Jay L. Exploring Creation With Physical Science. Apologia Educational Ministries, Inc. 1999, 2000
| Periodic Table of the Elements | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |||||||
| *Lanthanides | ||||||||||||||||||||||||
| **Actinides | ||||||||||||||||||||||||