This soft, silvery metal and a poisonous gas react to form an ionic compound that we consume daily. An ionic bond, one type of chemical bond, forms between Na and Cl. We ll learn how the valence electrons of elements interact to form compounds very different from the original elements. Write a list of cations and anions on the board. Give each team one minute to write the correct chemical formula on an index card.
Teams get one point for each correct formula.
Name the compound and select a student at random to write the formula on the board. Each correct formula earns one correct point for that team. Independent Practice 1. Memorize polyatomic ions. Through this lesson we will be able to describe ionic compounds and the bonds that hold together the cations and anions that make up the compounds.