Lesson: Halogens Chemistry • 7th Grade

Students will be able to

• identify the position of the halogens (group 17) on the periodic table,
• name the elements of the halogens,
• list the color of diatomic halogen gases in order to deduce the trend in colors as we move down the group,
• describe the trends in physical properties of the halogens and link these properties to the general properties of nonmetals,
• describe trends in reactivity in group 17 in order to predict the likelihood of reactions of halogens in the formation of salts,
• use the electronic configuration of the halogens to explain the trend in reactivity and displacement reactions of group 17 elements,
• make predictions regarding the reactions and properties of less common elements such as astatine.