Cracking the Code: How the Periodic Table Was Built - GCSE Chemistry

In this episode of GCSE Science Simplified, we explore the design and structure of the periodic table—how Mendeleev used properties and atomic masses to organise elements, predicted undiscovered ones, and why the modern table is based on atomic number. Learn about groups, periods, and the key differences between metals and non-metals. Everything you need to understand the logic behind the periodic table and ace your exam!