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Calcium metal. (Tomihahndorf)Here are some quick facts about the element calcium. You can find more calcium facts on the calcium facts page.
  • Calcium isn't found free in nature, but it can be purified into a soft silvery-white alkaline earth metal.

  • Calcium is the 5th most abundant element in the Earth's crust, present at a level of about 3% in the oceans and soil.

  • The element is essential for animal and plant nutrition. Calcium participates in many biochemical reactions, including building skeletal systems and moderating muscle action.

  • While calcium and its compounds are not considered to be toxic, ingesting too many calcium carbonate dietary supplements or antacids can cause milk-alkali syndrome, which is associated with hypercalcemia sometimes leading to fatal renal failure. Excessive consumption would be on the order of 10 g calcium carbonate/day, though symptoms have been reported upon ingesting as little as 2.5 g calcium carbonate daily.

  • Calcium is used for making cement, making cheese, removing nonmetallic impurities from alloys, and as a reduction agent in the preparation of other metals.

  • Pure calcium metal reacts vigorously and sometimes violently with water and acids.

  • The element name "calcium" comes from the Latin word "calcis" meaning "lime".

  • Calcium has been known since the 1st century, when the ancient Romans were known to make lime from calcium oxide.

More About Calcium | Periodic Table & The Elements


October 21, 2008 at 8:41 am
(1) elizabeth says:

this is sooooooo kool!!

March 1, 2009 at 9:17 pm
(2) Somebody says:

That’s interesting! Thank you for sharing this :) I never knew it could be turned into a metal!

April 29, 2011 at 1:26 pm
(3) james says:

omg your welcome !!!!!!!!!!!!!! im so happy for you

September 21, 2011 at 7:24 pm
(4) michelle purnell' says:

OMG Thanx but why thank me wat did i do

March 5, 2009 at 2:44 pm
(5) Jose Reyes says:

i really like this website so i hope u keep writing info becasue i need more so can u plz b4 i get a F as a grade i cant get that my mom will be very upset >:0 /:p

May 21, 2009 at 7:47 pm
(6) julia says:

ya I have to do a project to, but whatever. its important to know bout these things. Thanks for the info!

October 7, 2011 at 9:07 am
(7) Gabriel says:

same thing with me… i fail then i pass

June 2, 2009 at 1:19 pm
(8) your mother says:

thank your this helped soo much

June 21, 2009 at 2:45 am
(9) holly says:

Thanx soooooooooo much!

I gotta do a dumb project too!

November 29, 2011 at 5:01 pm
(10) kassi says:

ya me 2 dnt feel bad about it either teehee

September 20, 2009 at 12:50 pm
(11) jon says:

ye this is well cool

September 27, 2009 at 12:02 pm
(12) Madeline says:

This is just the right stuff for a project i am doing anyone else have a web site for me where i can find facts about my element Calcium

October 7, 2009 at 9:25 am
(13) abby says:


February 28, 2011 at 10:36 pm
(14) Doddo says:

I didn’t think you were going to say potassium after the end of the comment haha ;)

October 28, 2009 at 9:42 am
(15) kyera says:

this is a good project to do and i love to do healtj

November 4, 2009 at 8:55 pm
(16) jennifer says:

this is a lot of help….but….can you put more info about calsium

November 19, 2009 at 4:33 pm
(17) alexis says:

i love calcium because it is in chocolate milk!! =)

November 21, 2009 at 5:29 pm
(18) evy says:

i gotta do a projest on dis 2….. n its complicated.& i hate atoms now>:(

November 22, 2009 at 8:18 pm
(19) tabitha says:

thanxs for the help StUpId project

November 27, 2009 at 1:49 pm
(20) Pamella Kruse says:

this is a cool website :)

May 14, 2011 at 2:59 pm
(21) grace says:

yup this IS cool website except the fact that i have to do a project on Calcium =.= lol

November 29, 2009 at 9:09 pm
(22) ben says:

jeez why you people think its stupid? sure i have to do a project on it even tho i dont want to, but cmon id rather be familiar with this then be a dumbass. And no im not a nerd i hang out with my friends and play videogames.

December 8, 2009 at 8:04 pm
(23) Rubasha says:

this is helpful to me cause i do ing a project for science fair. scince is cool but lots of work.thz for the info.i am a girl by the way.

December 10, 2009 at 5:34 pm
(24) bubba says:

this doesnt help 4 history much but thx 4 tryin

December 15, 2009 at 9:06 pm
(25) Jesse says:

Haha Hannah so do I. I can’t find a fricken “cool” fact about it though… ah!! :(

December 15, 2009 at 9:08 pm
(26) GagaFan says:

Haha were like all doing projects… are we all in middle skewl? are are there some failure high skewlers? :p

January 17, 2011 at 11:29 am
(27) Janelle says:

funny:) :) :)

March 22, 2011 at 4:39 pm
(28) hannahh says:

why would ‘failure’ high schoolers be doing a project on this? Any grade could do projects on Calcium. I’m a junior in high school and i’m doing this project for my advanced placement chemistry course. Looks like you’re failing english…because you obviously can not spell ‘SCHOOL’ :)

December 15, 2009 at 9:44 pm
(29) Bells says:

ok i guess this helped, but i wish that there was more info. . . . . . i have to do a project on calcium, , , ,, fun.

December 16, 2009 at 5:25 pm
(30) somebodi says:

im sorry, but this didnt help me at all…. i have to find “cool facts” that wasa lyke 2 sectences

January 8, 2010 at 8:56 am
(31) sara says:

Thanks! :) I’m sorry about the other people, they’re being rude. Atleast you gave facts at all. You never said they’d be cool, although the 5th most abundant is interesting!

January 15, 2010 at 11:19 am
(32) Beezz says:

this helps a little

and ben a sra are right
why r poeple being soo dumb

February 3, 2010 at 7:44 pm
(33) User123 says:

Thanks for this info! I’m using it for a science project and it really helped for the interesting facts info

February 17, 2010 at 10:49 pm
(34) Sonic the Hedgehog says:


February 18, 2010 at 2:21 am
(35) supa-phreshh chikah ! says:

oh thanks iv gota do this stupid as project :D

February 18, 2010 at 1:30 pm
(36) Jimmers says:


February 20, 2010 at 3:16 pm
(37) bella says:

thanks for taking your time to make this and don’t kisten to the haters they don’t know what they’re talking about

April 27, 2010 at 2:36 am
(38) melinda says:

thanks this info helped heaps!!! :)

September 8, 2010 at 8:31 am
(39) cummings.richard82 says:

good post…………

September 12, 2010 at 11:40 pm
(40) a student says:

i have to do a project of an atom of calcium with 2pages worth of facts about calcium,so this was a good place to get info.

September 25, 2010 at 12:09 am
(41) Natalie Player says:

Thanks!!!!! That to u i finished my 15 pages project about calcium!!!!!!

November 8, 2010 at 7:59 pm
(42) a student who really like this says:

Thank you whoever posted this im finally done with my 6th grade hw about it once gain thanks!

November 13, 2010 at 12:58 pm
(43) Hannah says:

Wow thank you this really helped me with my project for school thank you!

November 29, 2010 at 5:23 pm
(44) your moms mom says:

This Helped so much :)

December 8, 2010 at 1:50 pm
(45) desirae perez says:

this is helpful thanx a lot u guys now i can finish my project!!!!!

December 14, 2010 at 2:42 pm
(46) Zoe Jade says:

thanks! really helped with my science project:) Good information.

December 14, 2010 at 8:56 pm
(47) Mango says:

thnx sooooo much. dis helpes loads on my science project. im sooo happy that this is here.

December 28, 2010 at 9:20 pm
(48) naomi says:

Thabks I have this adopt an element project to do and this was so helpfull!!!!!!! thanks!

January 9, 2011 at 8:59 pm
(49) junieb says:

I HHHHAAAAAAATTTTTTEEEEEE!!!!!!!!!!!!! calcium i want humphrey davy to die for discovering it!!! >:(

January 14, 2011 at 12:27 pm
(50) Mallywally says:

Wow! This was very helpful, I’ve been working on a project and this helped a lot! Thank you so very much! You are a very smart woman! Thanks again

January 17, 2011 at 8:09 am
(51) Gucci mane says:

whatch your backs…

January 26, 2011 at 10:22 am
(52) Brianna says:

I gotta write a stupid report over it … Bleck! Hm well this helped slightly. Though they should really put more info on here.

February 3, 2011 at 11:58 am
(53) Marsha says:

thanks! this helped me alot i have a adopt an element project too so this is really helpful…though i dont know why they are makeing us do a project on an element. oh well, thanks!

February 13, 2011 at 3:41 am
(54) kathleen :D says:

thank you :D

February 21, 2011 at 12:26 pm
(55) bry-anna says:

yes thank you very much! i am also writing a paper but i already knew these things! thanks though (:

March 1, 2011 at 8:05 pm
(56) mary says:

yep i got a lot of projects too do dang man this one is very easy lol

March 9, 2011 at 9:06 am
(57) ricky mendoza says:

yo waz up yo this helped me wit mah project

March 22, 2011 at 9:09 pm
(58) mirandaaaa. says:

Hmm ,i’m in 8th grade and i have to do a project for school too, i dont know if i want to do it on calcium or not though.

March 23, 2011 at 1:01 pm
(59) Gavin says:

Arghhhhh!!!!!! I have to do a project in Science on calcium… tis’ hard to not get the same facts from each website, havent found one that doesn’t have a diff fact than the others.

-Gavin, GRADE: 3

March 30, 2011 at 9:48 am
(60) john boy says:

…. i liek pie ^A^

April 14, 2011 at 7:48 pm
(61) May says:


April 14, 2011 at 7:52 pm
(62) Hilda says:

Thanks! this helps alot

April 24, 2011 at 1:31 am
(63) Relinil says:

thx this helped me alot on my element Calcium project ALOT! thx again!

September 13, 2011 at 8:51 pm
(64) Monica says:

Ok I have to do a project TOOOO, but hey why need more info when you can write the information thats there I mean its simple. Well I say that cause my project is not a big deal. I LOVE this websit! If it weren’t for that I would have been dumb on this calcium!! I FEEL STUPID soomehow!! HAHAHAHAHAHAHAH!!!!

September 28, 2011 at 10:38 pm
(65) Cameron says:

This was very useful. Now I will get a good grade on my chemistry project. Thanks!

November 30, 2011 at 11:49 am
(66) Katie says:

This is great information for my Chemistry Element project. It was very helpful(:

December 12, 2011 at 6:19 pm
(67) alijah white says:

wow this is good stuff this will help me with my science report!! thank you!!

January 10, 2012 at 12:06 pm
(68) Zane says:


February 13, 2012 at 11:58 am
(69) Nobody says:

bannas are awsome

February 20, 2012 at 4:52 pm
(70) someone says:

thx it really helped with my project!!!:)

April 9, 2012 at 12:12 pm
(71) faith says:

i have to do a projet on calcim and this really helped me thx u ppl ;p

-faith grade 6

May 23, 2012 at 9:29 pm
(72) i like milk3 says:

i like milk :3

May 28, 2012 at 6:05 am
(73) Caitlynnn says:

OMG thanks i needed this for an assignment for science XD

September 4, 2012 at 10:24 am
(74) someone says:

gr8 info thx

September 23, 2012 at 7:34 pm
(75) nixi says:

Thx! I’m taking science PreAP this year and I was assigned to put together a project all about calcuim. But I barely know anything about that element so I’m doing last minute studying. Again, thxs for the help, I couldn’tve done this without you!

September 30, 2012 at 4:41 pm
(76) jordan says:

thanks for the supported facts really needed it for this last minute project thanks ! :)

December 5, 2012 at 1:37 pm
(77) ana flores says:

thank you so much this is sooo coool!

February 5, 2013 at 1:24 pm
(78) prettylilthang says:

this a good website in all but u need to put a little more info on here im lik da other girl i have a project i need to finish rite know n u dnt have the information i need

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