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10 grams under oil.
An example of the element Calcium

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10 grams under oil.
I'm hoping to get some really shiny crystalline calcium under argon soon, but this bottle has the advantage of being opened already, so if I want to do any experiments with the calcium, I can get to it without having to break a glass tube. Calcium is fairly reactive in air, so this bottle is filled with mineral oil, which has preserved a fairly clean surface on these metal chips.
When I hear the word "calcium" I, and probably a lot of people, think of a chalky powder, like a calcium supplement pill. But that's a salt, like calcium carbonate (which is, in fact, chalk). Pure calcium really is a metal, lustrous, malleable, the works.
Source: eBay seller flabster
Contributor: Theodore Gray
Acquired: 3 January, 2003
Price: $10.50
Size: 1"
Purity: >99%
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