While assigning a term for a chemical to be an acid or base we have to look for the ions that can be donated by a chemical formulas or ions for the basic , When you created hypotheses to guess whether each chemical was an acid or base,
To determine whether a substance is an acid or base , count the hydrogen on each substance before and after the reaction . If the number of hydrogens has decreased the substance is the acid ( donates hydrogen ions ) . If the number of hydrogens has increased that substance is the base ( accepts hydrogen ion )