[pcrh]

It's missing the characteristic element of a periodic table, which is both a visual and explanatory representation of the relationship between the composition of the different substances and their properties.

The concept is there, but it is presented as a regular table, not the classical periodic table.

The notion of "missing e̶l̶e̶m̶e̶n̶t̶s̶ cheeses" is entertaining, and the only real reference to the actual periodic table.