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AP Chemistry
Nickel sulfide is a chemical compound composed of nickel and sulfur atoms. It typically exists as an insoluble solid with low solubility in water.
Insoluble: A substance that does not dissolve appreciably in water or any other solvent.
Precipitation Reaction: A reaction that forms an insoluble product called a precipitate.
Sulfides: Compounds formed by combining sulfur with another element or group.