The document discusses the origins and development of the periodic table. It describes how Dmitri Mendeleyev organized the known elements into a table based on their chemical properties, leaving gaps that predicted future discoveries. Modern periodic tables continue to organize elements into rows and columns based on their properties, classifying them into groups like metals, nonmetals, noble gases, and transition metals.

1. Periodic TableThe Beginnings

2. Big Ideas about the beginningsCreator of Periodic Table- Dmitri MendeleyevHe put all the elements on cards to help him organizeHe organized the elements with similar chemical properties into columns and rowsFrom this organization, it left holes, BUT this gave chemists clues as to what elements were still left to discover

3. Periodic Table Now…Elements are organized by properties and put into periods (columns) and groups (rows)Types of Classification- Alkali Metals, Alkali Earth, Metals, Nonmetals, Halogens, Metalloids, Lanthanoids, Actinoids, Nonmetals, Noble Gases, Transition Metals