Calcium

 Kelly - 10/27/2004 11:29:15 PM

	Andrew Guilford - 10/26/2004 5:05:47 AM
	what is it's atomic mass?

its atomic mass is 40.078

 Andrew Guilford - 10/26/2004 5:05:47 AM

what is it's atomic mass?

 Ashleigh - 10/17/2004 5:44:57 PM

help my project is due tomorrow how many valence electrons does the element calicum

 asdlfjsadlkfjlskdajf - 10/1/2004 5:39:01 PM

Calcium was discovered by Sir Humphrey Davy in England in 1808. Compounds such as lime were prepared by the Romans in the first century under the name calx, meaning lime. Literature dating back to about 975 AD notes that plaster of paris is useful for setting broken bones. Other calcium compounds used in early times include limestone. Calcium metal was not isolated until 1808. After learning that Berzelius and Pontin prepared calcium amalgam by electrolyzing lime in mercury, Sir Humphry Davy was able to isolate the impure metal. He did this by the electrolysis of a mixture of lime and mercuric oxide (HgO). Calcium metal was not available in large scale until the beginning of the 20th century.

 Bethany - 9/23/2004 12:03:14 AM

	Brandy - 1/19/2000 12:01:04 AM
	Hey um.. i would just like to know what was the story of the discovery of Calcium? if u kow e-mail me backa dn as subject put. Calcum story! thank you so much! Luv' Ya, Brandy

hey ya calcium was discovered by Sir Humphrey Davy in 1808 in London and that's all i know
Bethany

 Jan Straka - 8/19/2004 12:42:41 PM

	Anna - 8/2/2004 8:40:41 PM
	For the element Calcium, how many valence electrons does an atom have? and what type of ion will this atom want to form? Thanks~

Calcium atom is in II.A group so it has 2 valence electrons. Ca forms Ca2+ cation.

 Anna - 8/2/2004 8:40:41 PM

For the element Calcium, how many valence electrons does an atom have? and what type of ion will this atom want to form? Thanks~

 brittany lee - 5/18/2004 4:35:43 PM

need information about curuim.thanks send it to my email.

 miz d - 11/12/2003 8:12:04 PM

	Adrienne - 12/1/2001 8:37:29 PM
	I have a quick question for anyone...could you please email me back if you know the answer to this.....What is calcium found in and what is it used for? I need to know this for school...I can't thank you enough for answering it...thanks again

Calcium is used for bones and it can be found in milk! U need cacium to grow or your bones will be weak! Holla c/05

 miz d - 11/12/2003 8:10:39 PM

	Audrey - 3/5/2002 1:19:38 AM
	Got to www.elements.com and maybe that will help u. Or try www.calciuminfo.com that is what I did. Please e-mail me back. Thanx

go to www.webelements.com dat should help you out! Holla c/05

 jeff - 4/15/2002 12:21:09 AM

how much energy is required to make Calcium burn red (ie: how much energy is required to allow the valence electrons jump out another orbital to then fall back and emit a red colour?)

 Audrey - 3/5/2002 1:20:45 AM

Hey people please help me find more info on calcium or tell me about some websites or sumthin. Thanx

 Audrey - 3/5/2002 1:19:38 AM

	Jess - 4/13/2001 1:38:48 AM
	HELP! I HAV A REPORT DUE NEXT MUNDAY AND I KIND OF REALLY NEED MORE INFO ON IT... PULEAZEZZZZZZ... thanks..

Got to www.elements.com and maybe that will help u. Or try www.calciuminfo.com that is what I did. Please e-mail me back. Thanx

 Adrienne - 12/1/2001 8:37:29 PM

I have a quick question for anyone...could you please email me back if you know the answer to this.....What is calcium found in and what is it used for? I need to know this for school...I can't thank you enough for answering it...thanks again

 Gabby - 6/5/2001 1:35:57 AM

This is a cool sight that gives you tons of information whether you are doing assignments or just wanna find out yourself! ( its great )

 Jess - 4/13/2001 1:38:48 AM

HELP! I HAV A REPORT DUE NEXT MUNDAY AND I KIND OF REALLY NEED MORE INFO ON IT... PULEAZEZZZZZZ... thanks..

 Andrew - 1/19/2001 2:16:41 PM

I have a report due next friday if anyone has Any info on calcium plese help.

 Chris - 10/17/2000 3:13:17 AM

hey i have a report on calcium due next week. i need a lots of info. please help.
thanx

 [email protected] - 10/8/2000 7:23:45 PM

hey if anybody knows some chemical properties of calcium let me know right away.
Thanks

 Brandy - 1/19/2000 12:01:04 AM

Hey um.. i would just like to know what was the story of the discovery of Calcium? if u kow e-mail me backa dn as subject put. Calcum story! thank you so much!
Luv' Ya,
Brandy