Solids generally conduct electricity better than liquids. This is because solids have tightly packed atoms that allow electrons to flow freely through a lattice structure. Metals, in particular, are known for their excellent conductivity due to their delocalized electrons. In contrast, liquids, especially those that are ionic or contain dissolved minerals, can conduct electricity but typically not as efficiently as solids. For example, pure water is a poor conductor, while salty water has improved conductivity due to dissolved ions. Thus, while both states of matter can conduct electricity, solids usually do so more effectively and efficiently.