Alkali metals, Halogens & Noble Gases
The Periodic table consists of many periods and groups, but the three main ones you'll learn about in school are the Alkali metals (Group 1), The Halogens, (Group 7), and the Noble gases, (Group 0).
Test your knowledge on these three groups in the Periodic Table and see if you fully understand them. This test will be great if you're revising for an upcoming science test!