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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
2. 2nd holds 8
3. 3rd holds 18
4. 4th holds 32
maximum numbers of e’s that each level can hold
Lithium
3P 4N
KEY
#p= 3 #n= 4 #e= 3
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.
Magnesium
12P
12N
KEY
#p= 12 #n= 12 #e= 12
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™ and aSorenson Video 3 decompressorare needed to see this picture.
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 Table Trends
• 1. Atomic number increases left to right, top to bottom
Periodic Table Trends
• Periodic Table Trends
• 2. Groups / Families = Vertical Columns
• 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 Table Trends
• 3. Periods = horizontal rows
Periodic Table Trends
• Periodic Table Trends
• 4. Metalloids= along stair step line (metal and non-metal characteristics)
Periodic Table Trends
• Periodic Table Trends
• 5. Metals= everything to left of stair step line
Periodic Table Trends
• Periodic Table Trends
• 5. Metals= everything to left of stair step line
• 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 Table Trends
• 6. Non-metals = everything to right of stair step line (most common)
Periodic Table Trends
• Periodic Table Trends
• 6. Non-Metals
• A. dull• 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 Table Trends
• 7. Transition elements- elements in gps 3-12 with unusual properties
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?
K19
39.10
Chemical Symbol
Atomic Number
Atomic Mass
How many p, e and n?
Cu29
63.55
Review: Bohr Models
• Make a Bohr Model of Lithium
Lithium
3P 4N
KEY
#p= 3 #n= 4 #e= 3
Review: Bohr Models
• Make a Bohr Model of Silicon
Silicon
14P
14N
KEY
#p= 14 #n= 14 #e= 14
Do you know your elements yet??
• Be• I• Sn• Ag• C
Do you know your elements yet??
• He• U• Ba• Mg• K
Do you know your elements yet??
• Ne• P• Cl• Pt• Au
Do you know your elements yet??
• Hg• Rn• Co• Mn• Cu
Do you know your elements yet??
• As• Zn• F• Na• Si• P
Periodic Table Review Game: Website
• Periodic Table Games
