Journal Entry:

What do you notice about the number of spokes on the circles? The spokes represent electrons. Do the spokes represent the total number of electrons? Explain you thinking?

Learning Intentions

• We will learn how certain elements give off colored light

• We will learn the difference between valence shell electrons and core electrons.

• We will learn the patterns in the periodic table associated with electron arrangements.

Closing Task:

Using the periodic table and a given atomic number, you can determine element’s name and symbol, the number of valence, core and total electrons, the group and period number and other elements with the same valence electrons.

Content Standards being covered:

Students understand the structure of matter at the atomic level and the history that lead to our current understanding.