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The First Battle of Bull Run was a Union defeat.
Magnesium
A shiny gray solid, this chemical element has symbol Mg and atomic number 12, known for its lightness and strong structural properties, widely used in alloys.
Chloride
A compound formed with chlorine and another element or group, commonly found in table salt (sodium chloride).
Magnesium Sulfate
A chemical compound, a salt with the formula MgSO4, often encountered as the heptahydrate sulfate mineral epsomite (commonly known as Epsom salt).
Sulfur
A nonmetallic chemical element with the symbol S and atomic number 16, known for its yellow crystalline appearance and importance in organic molecules.
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