Browse a list of curated classroom activities by the American Association of Chemistry Teachers. Lesson Plans: The Periodic Table and Bonding Download inquiry-based lesson plans and activity sheets to ...

The periodic table - AQA Mendeleev made an early periodic table. In the modern periodic table, elements are in order of atomic number in periods and groups. Electronic structures model how ...

The electrons are arranged in shells around the nucleus. The periodic table The periodic table is a chart of all the elements arranged in increasing atomic number. Group 1 alkali metals The Group ...