One of the first studies of condensed states of matter was by English chemist Humphry Davy, when he observed that of the 40 chemical elements known at the time, 26 had metallic properties such as lustre, ductility and high electrical and thermal conductivity.
One of the first studies of condensed states of matter was by English chemist Humphry Davy.26 had metallic properties such as lustre, ductility and high electrical and thermal conductivity. This was what he observed. This was of the 40 chemical elements. These 40 chemical elements were known at the time.