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NaF stands for sodium fluoride, which is an ionic compound made up of sodium cations (Na+) and fluoride anions (F-). It dissolves easily in water to release these ions.
Hydrochloric acid, a strong acid that dissociates in water to produce hydrogen ions (H+) and chloride ions (Cl-).
Hydrofluoric acid, another compound containing the same fluoride ion but bonded with hydrogen instead of sodium. It has different properties from NaF.
A homogeneous mixture where one substance called the solute dissolved completely into another substance called the solvent.