What can bases dissolve

As Bases (English base) is the name given to chemical compounds with a pH greater than seven. Bases act as so-called Proton acceptors, that is, they have hydrogen ions (H.+) from their reaction partners. The counterpart to bases are the acids. Both bases and lyes are very corrosive, depending on their concentration. For this reason, experiments must not be carried out without appropriate safety measures.

The distinction between Lye and base. Both terms are often used synonymously, although in principle there is nothing wrong with that. However, there is a small difference between lye and base. The term lye is the older one and can mostly still be found in old chemistry books. From today's understanding, a lye is an alkaline solution (means: liquid with a pH value above 7), while the general term base is based more on the proton acceptor property (see above). The latter applies to all variants of basic substances. The lye, however, describes an aqueous solution with alkaline / basic properties. So if you say that a lye is a base in an aqueous solution, you are correct. In summary: All alkalis are bases. But not all bases are alkalis.