(Chemi symbol Ca) A chemical element with atomic number of 20 and a molar mass of 40.08 grams.
In terms of physical properties, it's melting point is 1115°K or 842 °C (1548 °F) and boiling point is 1757 or 1484 °C (2703 °F). It's density is 1550 kg/m3 and it's molar volume is 26.20 cm3.
In terms of chemical properties: it is a group 2 metal (or Alkaline Earth Metal) with 2 electrons in the outermost valency shell. As well as 2, 8, and 8 electrons in it's 1st, 2nd and 3rd shell respectively, which are not used in chemical bonding.
Calcium ions typically have a charge of 2+ and exist in aqueous calcium salt solutions. Calcium exists, chemically bound, in human bones to provide strength as well as in Marble structures.
Calcium is not naturally found in its chemical form due to it's relatively high reactivity. However, it is the 5th most abundant element in the earth's crust. Elemental Calcium can be extracted through a process of smelting and electrolysis. It reacts spectacularly in water or when ignited in an oxygen rich atmosphere.
Calcium used for experimentation in labs is usually a dull greyish colour because the surface has been oxidised by atmospheric oxygen.
*Anyone who has bothered reading this far is truly a nerd (or someone doing an assignment)*
In terms of physical properties, it's melting point is 1115°K or 842 °C (1548 °F) and boiling point is 1757 or 1484 °C (2703 °F). It's density is 1550 kg/m3 and it's molar volume is 26.20 cm3.
In terms of chemical properties: it is a group 2 metal (or Alkaline Earth Metal) with 2 electrons in the outermost valency shell. As well as 2, 8, and 8 electrons in it's 1st, 2nd and 3rd shell respectively, which are not used in chemical bonding.
Calcium ions typically have a charge of 2+ and exist in aqueous calcium salt solutions. Calcium exists, chemically bound, in human bones to provide strength as well as in Marble structures.
Calcium is not naturally found in its chemical form due to it's relatively high reactivity. However, it is the 5th most abundant element in the earth's crust. Elemental Calcium can be extracted through a process of smelting and electrolysis. It reacts spectacularly in water or when ignited in an oxygen rich atmosphere.
Calcium used for experimentation in labs is usually a dull greyish colour because the surface has been oxidised by atmospheric oxygen.
*Anyone who has bothered reading this far is truly a nerd (or someone doing an assignment)*
by Skyboy September 06, 2005
One of the shiftiest occupations a someone can take. Car salesman earn commision from whatever they sell and will lure, lie, mislead, con, deceive people into buying a car. This is especially true when it comes to used cars.
A car salesman ranks 9.5/10 on the shifty scale along with the real estate agents, politicians and professional con men.
by Skyboy September 09, 2005
by Skyboy September 08, 2005
Every year there is at least one Carnage in the streets of America due to it's incredibly high crime rate.
by Skyboy September 08, 2005
A paraphilia in which one has a sexual fixation on medical procedures. Including, amputations, heart surgery, etc. The person is usually turned on by blood, gory and guts.
by Skyboy September 06, 2005
Sexual fixation involving vomiting, being vomited on or eating vomit (yours or someone else's). Truly one of the most disgusting fetishes I've read about.
by Skyboy September 06, 2005
1. To masturbate (have sex with yourself). Auto = self and sex = sex.
2. To have sex with an automobile. Auto = automobile and sex = sex.
2. To have sex with an automobile. Auto = automobile and sex = sex.
by Skyboy September 08, 2005