Atom and Periodic Table Review

Chapter 4 and 5

Atom Basics• How do we determine the number of

1. Protons2. Neutrons3. Electrons4. Valance Electrons5. Energy Levels

1. Look at atomic #2. Mass – Atomic #3. Look at atomic #4. Look at group #5. Look at period #

Atom Basics• What does Borh’s model look like?– Center with number of protons and

neutrons labels– Rings with dots on them to represent

electrons• 1st ring has 2 dots, 2nd ring has 8 dots, 3rd

ring has 18 dots

• What does a Lewis Dot model look like?– Elements symbol with dots around it to

represent the number of VALANCE electrons

– Remember put one dot on each side to begin with, only double up with 5 or more electrons.

Periodic Table Basics• Where are the following types of elements located– Metals– Nonmetals– Metalloids

– To the left of the solid stair step line– To the right of the solid stair step line– Sitting on or below the stair step line

Periodic Table Basics• Group Names

Alkal I Metal

A EL AK RA TL HI N E

M E T A L S

Transition Metals

BORON

Fami lY

CARBON

Fami lY

NITROGEN

FA MILY

OXYGEN

FA MILY

HALOGEN

NOBLE

GAS

Complete the Atom and Periodic Table Practice