When identifying an unknown substance, there are many tests that can be used to discover what the substance is. When a substance is dissolved into water, it has an ionic or polar bond, but when a substance is dissolved into hexane or ethyl, it has a non-polar bond. This is based on the theory that like dissolves like. Tests such as the pH test, reaction with HCl, and reaction with NaOH can be used to see whether an unknown substance is an acid, base, or neutral. When an acid and a base are combined, a neutralization reaction occurs, and an acid or a base is poured onto a reactive metal, a reaction will occur. The magnetism test is used for identifying certain metals A melting point above 500oC is a metal or ionic substance; a melting point
