Examlex
Which of the following statements about the experiences of blacks during World War I is correct?
Combustion Reaction
A chemical process in which a substance combines with oxygen, releasing heat and often light; commonly associated with fire.
Oxidation Number
A concept in chemistry that reflects the degree of oxidation of an atom in a chemical compound.
Potassium
A chemical element with symbol K and atomic number 19, it's a vital nutrient that regulates fluid balance and nerve signals.
Oxidation Number
The oxidation number is a value assigned to an element in a chemical compound that represents the number of electrons lost or gained by an atom of that element in the compound.
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