Elements and the Periodic Table of Elements

 After finishing this lesson, you will understand how elements are named, grouped, and listed on the periodic table. • Discuss the history of the periodic table of elements • Describe the role elements play in chemistry • Explain the importance of an element’s atomic weight, atomic number, and symbol • Discuss how electrons in the outer shell of an atom relate to chemical reactions and bonding • Describe the organizational pattern of the periodic table of elements and list classifications of elements