Examlex
Identify and give the historical significance of each of the following terms, events, and people in a paragraph or two.
-free blacks
Bromine
A chemical element with symbol Br and atomic number 35, known for its reddish-brown color and use in various compounds.
Boron
A metalloid element with atomic number 5, used in borosilicate glass, fiberglass, and as a dopant in semiconductors, displaying properties of both metals and non-metals.
Bismuth
A chemical element with the symbol Bi, known for its crystalline structure and various applications including cosmetics and pharmaceuticals.
Calcium
A chemical element with the symbol Ca, an alkaline earth metal that is essential for living organisms, particularly in cell physiology and bone formation.
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