The periodic table (video) | Khan Academy
https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atoms-elements-and-the-periodic-table/x2613d8165d88df5e:the-periodic-table/v/periodic-table-introduction
WEBAbout. Transcript. The periodic table organizes elements into groups and periods based on their chemical and physical properties. Elements in the same group share similar characteristics, like reactivity. The table is divided into metals, nonmetals, and metalloids, each with distinct properties.
DA: 11 PA: 56 MOZ Rank: 40 Up or Down: Up