5-1: Atoms, Bonding, and the Periodic TableWhat does the periodic table tell you about

the atoms of an element?

Anticipatory Set

Why do you organize your playlist by genre?

California StandardsScience Standard 8.3.f: Students know how

to use the periodic table to identify elements in simple compounds.

Inputvalence electron: the electrons that have

the highest energy level and are held most loosely.

electron dot diagram: includes the symbol for the element surrounded by dots; each dot stands for one valence electron.

chemical bond: the force of attraction that holds two atoms together as a result of the rearrangement of electrons between them.

InputValence Electrons and Bonding

The number of valence electrons in an atom of an element determines the ways in which the atom can bond with other atoms.

Valence electrons…Electrons in the outermost shell of an atom.Have the highest energy level.Involved in bonding between atoms.

Input & ModelingValence Electrons and Bonding

Electron Dot Diagrams include the symbol for an element surrounded by dots that represent the

number of valence electrons.

Input & ModelingValence Electrons and Bonding

Chemical Bond The force of attraction that holds two atoms

together as a result of the rearrangement of electrons between them.

Electrons may be transferred from one atom to another, or they may be shared between the atoms.

The Rule of 8 Atoms are unlikely to react when they have 8

valence electrons.

Input & ModelingHow the Periodic Table Works

What does the periodic table tell you about the atoms of the elements?

The periodic table reveals the underlying atomic structure of atoms, including the arrangement of the electrons.

Input & ModelingHow the Periodic Table Works

The number of valence electrons varies by group.

•Group 1 elements have 1 valence electron.•Group 2 elements have 2 valence electrons.•Groups 3 – 12 have 1 to 2 valence electrons.•Group 13 elements have 3 valence electrons.•Groups 14 – 18 have 4, 5, 6, 7, and 8 valence electrons, respectively.

Group 3 through 12

elements do not follow the same pattern as the other

groups!

Example of Group 1 elementsLithium Atom:

3 Protons/3 Neutrons3 Electrons – 1 in Valence Shell

Sodium Atom:11 Protons/11 Neutrons11 Electrons – 1 in Valence Shell

What information does an electron dot diagram show?

Check forUnderstanding

# of valence electrons

How are atoms of the elements in Group 1 similar?

The each have one valence electron.

Answer #1-5Guided Practice

Independent PracticeFinish the worksheet.

HOMEWORK EXTENSION Write a detailed SUMMARY of the section and

complete the UNANSWERED QUESTIONS section of your notes.

Choose two of the remaining Depth & Complexity ICONS in your notes and explain how they relate to this section.