Journal Entry:

How do you think the elements are organized in this table? What do you think Mendeleyev was trying to do?

Learning Intentions

• We will learn how the organization of the periodic table is based on reactivity and atomic mass

• We will learn how to predict the characteristics of a missing element on the periodic table based on its position in the table.

Closing Task:

You can determine which elements should be grouped together based on properties they have.

Content Standards being covered:

Students can use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.