The Elements• Page 15 of INB• EQ: Analyze how the periodic

table is organized.

Atomic number:# of protons in the nucleus of an atom

Uncharged atoms means: # of protons = # of electrons

SymbolBasically the abbreviation for the element

Average atomic mass# of Protons + # of Neutrons (amu)*See next slide

How to use the periodic table…

Using the same number???

Mass Number # on periodic table but ROUNDED

Average Atomic Mass Actual # shown on periodic table Average of all the elements isotopes

Atomic Mass Unit Unit used to express g (gram) value of

the atoms mass by comparing it to the mass of the carbon-12 atom

* “Really” all the same # on periodic table

Groups (families):The Columns Elements in groups have similar chemical properties

Periods: The RowsElements properties vary across periods

*Lanthanide Series and Actinide Series are the two outset rows at the bottom

Group/Family

Period/RowAt the end of a sentence you put a ________.

2 Main Sections in Periodic Table

Metals Nonmetals

- Good Electrical and Heat Conductors- Contain properties of malleability, are ductile, and high tensile strength

- Poor Electrical & Heat Conductors

2 Minor Sections in Periodic TableMetalloids Noble Gases

- Stair step barrier between metals and nonmetals- Have characteristics of both metals and nonmetals- Semi-Conductors- At room temperature = ALL are solids

- Unreactive - At room temperature = ALL are

gases- Where neon lights and party

balloons come from

REVIEW ELEMENTS HANDBOOK (page 784)

• As you read/skim write 3 facts about each group.

• Alkali, Alkaline Earth, Transition Metals, Boron, Carbon, Nitrogen, Oxygen, Halogens.

Page 17 of INBAnswer questions on page 22 of your textbook 5-13 ODD, 14, 17, 18, 19, 21.