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  • Calcium was discovered by Sir Humphrey Davy in 1808. This element is a stub. Learn how you can help Wikiversity to expand it. (See other stubs
    685 bytes (27 words) - 13:55, 5 April 2016
  • may have superconducting properties. Calcium intercalated graphite (CaC6) is graphene coated with a calcium atom also with near superconductive properties
    7 KB (733 words) - 21:15, 25 March 2016
  • "Some observations show that Mercury is surrounded by a hot corona of calcium atoms with temperature between 12,000 and 20,000 K." At right is a diagram
    100 KB (11,934 words) - 17:41, 8 August 2016
  • "Some observations show that Mercury is surrounded by a hot corona of calcium atoms with temperature between 12,000 and 20,000 K." At right is a diagram
    97 KB (12,267 words) - 21:00, 15 August 2016
  • Carbonate into Calcium Oxide and Carbon Dioxide gas: CaCO3 → CaO + CO2 Single replacement reactions involve the replacement of one atom in a compound by
    2 KB (279 words) - 06:13, 6 May 2015
  • Ionic bonding occurs when an atom or molecule completely transfers electrons to another atom or molecule. This happens because the valence electron of
    6 KB (786 words) - 15:45, 20 July 2016
  • what chemical property? 6. Complete the text: 7. True or False, An atom of hydrogen bearing a negative electrical charge is an ion. 8. When plasma
    11 KB (998 words) - 22:20, 23 April 2016
  • Astronomy "Hibonite (CaAl12O19) and calcium dialuminate (Ca Al4O7) are among the most refractory minerals observed in calcium-, aluminum-rich inclusions (CAIs)
    19 KB (2,106 words) - 23:30, 25 May 2016
  • in bedrock and regolith exposed at Earth's surface is dependent on its calcium, potassium, and chloride content and can be expressed by the equation
    42 KB (5,393 words) - 02:56, 5 June 2016
  • -183 degrees Celsius and its melting point is at -210 degrees Celsius. Calcium on the other hand has a boiling point of 1484 degrees Celsius and its melting
    4 KB (791 words) - 09:34, 17 September 2015
  • 2H2O, oxidanes, with each having about 50 molecular %. Calcium does not occur as native calcium. Here it links to the oxygens in the silicate tetrahedra
    10 KB (894 words) - 23:47, 23 April 2016
  • dolomite. Calcite on the right is a common calcium carbonate mineral that occurs in orange. For its calcium content it is an alkaline earth mineral, for
    104 KB (9,137 words) - 02:46, 21 April 2016
  • or False, Curium is an actinide element. 33. Uranophane is a rare calcium uranium 34. True or False, Berkelium is an actinide element. 35
    12 KB (1,041 words) - 02:36, 21 April 2016
  • table, including silicon, oxygen, iron, magnesium, potassium, aluminum, calcium, sulfur, and carbon." Main sources: Chemicals/Hydrogens and Hydrogens
    99 KB (11,097 words) - 23:35, 3 June 2016
  • elements. For example, kaolinite is Al2Si2O5(OH)4. If aluminum (Al) at two atoms per molecular unit were the most numerous element, kaolinite would be an
    79 KB (7,364 words) - 03:20, 8 August 2016
  • elements. For example, kaolinite is Al2Si2O5(OH)4. If aluminum (Al) at two atoms per molecular unit were the most numerous element, kaolinite would be an
    12 KB (994 words) - 00:44, 24 April 2016
  • or False, Curium is a transuranic element. 26. Uranophane is a rare calcium uranium 27. True or False, Berkelium is an actinide element. 28
    7 KB (614 words) - 04:04, 21 April 2016
  • Bombardment by protostellar may make the rock of calcium-aluminum-rich inclusions and chondrules radioactive, producing found in meteorites that are
    7 KB (511 words) - 23:59, 22 April 2016
  • Main source: Radiation Gold "nuclei (the positively charged part of the atom made of protons and neutrons) [are] sent speeding around [the Relativistic
    36 KB (5,148 words) - 21:58, 19 May 2016
  • or False, Curium is an actinide element. 33. Uranophane is a rare calcium uranium 34. True or False, Berkelium is an actinide element. 35
    10 KB (912 words) - 02:20, 21 April 2016

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