Answer;
It is a scientific model.
Step-by-step explanation;
-A scientific model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly.
-The Periodic Table is an example of a scientific model. It is not only one of the basic organizing principles to which students are introduced, but also a central model used as a tool of induction. Further, the Periodic Table plays a significant role in both understanding of the chemical elements and predicting their features: the elements' structure and properties, and their relationships.