# Atoms, Elements & The Periodic Table

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```					The Periodic Table

BY: BRIANNA SHIELDS
DO NOW
• 1. What element has 7 protons?

• 2. How many neutrons does Hydrogen
have?

• 3. How many electrons does Neon have?
GOAL
• To construct Bohr models
• To use the periodic table and become
familiar with its elements
Review: Fill in the table
Particle      Charge   Mass   Location Chart

1. Proton

2. Electron

3. Neutron
Review: Atoms
• How many protons, neutrons and electrons?
How many p, n, e?
How many p, n, e?
How many p, n, e?
How many p, n, e?
Steps to creating a Bohr Model
1.   Create a key: #p, #n, # e
2.   Draw the nucleus w/ several rings
3.   Put P and N in nucleus
4.   Put E into orbits from inside to outside
1. 1st level holds 2 electrons             maximum
2. 2nd holds 8                             numbers of
3. 3rd holds 18                            e’s that
4. 4th holds 32                            each level
can hold
KEY
#p= 3   Lithium
#n= 4
#e= 3

3P
4N
Bohr Model Example

6
6
6
Bohr Model Example

2
2
2
Bohr Model Example
Bohr Model Example
• Make a Bohr model of Magnesium. Don’t
forget to make a key.
KEY
#p= 12   Magnesium
#n= 12
#e= 12

12P
12N
Draw the following Bohr
Models:
• Random students will be chosen to draw
theirs on the board (don’t forget to make a
key)
• Neon
• Hydrogen
• Potassium
Periodic Table Websites
• ACS Periodic Table
• http://www.webelements.com/
The Periodic Table- Video
What is the name for the element group in the
first column of the periodic table?
What is the name for the element group in the
last column of the periodic table?
The Periodic Table- Video

QuickTime™ an d a
Sorenson Video 3 decompre ssor
are need ed to see this p icture .
Trends in the Periodic Table

• ACS Periodic Table
• Chemistry: WebElements Periodic Table
• A Periodic Table of the Elements at Los
Alamo...
• Chemical Elements.com - An Interactive
Period...
The Periodic Table
You should be coloring in and labeling
your periodic table, as we take notes
Periodic Table Trends
• Periodic • 1. Atomic number increases left to
Table       right, top to bottom
Trends
Periodic Table Trends
• Periodic • 2. Groups / Families = Vertical
Table      Columns
Trends
• Gp 1= Alkali metals
• Gp 2= Alkaline earth metals
• Gp 17= halogens
• Gp 18= noble gases
Group 1= Alkali
Metals
Group 2= Alkaline
Earth Metals
Gp 17= Halogens
Gp 18= Noble
Gases
Periodic Table Trends
• Periodic • 3. Periods = horizontal rows
Table
Trends
Periodic Table Trends
• Periodic • 4. Metalloids= along stair step line
Table       (metal and non-metal characteristics)
Trends
Periodic Table Trends
• Periodic • 5. Metals= everything to left of stair
Table        step line
Trends
Periodic Table Trends
• Periodic •   5. Metals= everything to left of stair step
Table        line
Trends        • A. Usually have high melting points.
• B. Shiny when cut.
• C. Mostly tough, strong, malleable and
ductile.
• D. Good conductors of heat.
• E. Good conductors of electricity.
• F. Form alloys
Periodic Table Trends
• Periodic • 6. Non-metals = everything to right
Table       of stair step line (most common)
Trends
Periodic Table Trends
• Periodic • 6. Non-Metals
Table       • A. dull
Trends      • B. poor conductors
• C. brittle
• D. lower densities
• E. lower melting points
• F. some are solids, some liquids,
and some gases
Periodic Table Trends
• Periodic • 7. Transition elements- elements in
Table       gps 3-12 with unusual properties
Trends
Describe the locations of the
elements
• Ex: Neon is a non-metal located in period 2, gp
18 (noble gases)
•   Sodium
•   A metal located in period 3, gp 1, the
•   Nickel
•   A transition metal located in period 4, gp 10
•   Fluorine
•   A non-metal in period 2, grp 17 (halogens)
Describe the locations of the
elements
• Ex: Neon is a non-metal located in period
2, gp 18 (noble gases)
•   Aluminum
•   A metalloid in period 3, group 13
•   Hydrogen
•   A non-metal located in period 1, gp 1
How many p, e and n?
Atomic
Number
19
Chemical
Symbol
K         Atomic
Mass
39.10
How many p, e and n?

29

Cu
63.55
Review: Bohr Models
• Make a Bohr Model of Lithium
KEY
#p= 3   Lithium
#n= 4
#e= 3

3P
4N
Review: Bohr Models
• Make a Bohr Model of Silicon
KEY
#p= 14   Silicon
#n= 14
#e= 14

14P
14N
yet??
• Be
•I
• Sn
• Ag
•C
yet??
• He
•U
• Ba
• Mg
•K
yet??
• Ne
•P
• Cl
• Pt
• Au
yet??
• Hg
• Rn
• Co
• Mn
• Cu
yet??
• As
• Zn
•F
• Na
• Si
•P
Periodic Table Review Game:
Website
• Periodic Table Games

```
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