Journal Entry:

These drawings show two different ways to represent the arrangement of the electrons in atoms of the element calcium, Ca. Name at least two differences between the drawings. Name at least two similarities between the drawing.

Learning Intentions

• We will learn how to describe electron arrangement in an atom in terms of shells and subshells.

• We will learn how to use the periodic table to determine the electron arrangement of an atom and to write the electron configuration.

• We will learn the organization of the periodic table in terms of the arrangement of electrons in subshells.

Closing Task:

You can identify an element based on its electron configuration and explain how the configuration relates to where it is found on the periodic table.

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.

Student understands why bonding occurs between atoms, what types of bonds form when different elements interact, how the bonds form and properties that arise as result of the bond forming.