Do Now
Put your homework in the red basket
1. What is the atomic number of copper (Cu)
2. What element has 80 protons
3. An isotope of magnesium (Mg) has a mass number of 26. How many neutrons does it have?
4. Germanium (Ge) isotopes have the following natural abundance.
39% germanium-72
61% germanium-73
What is the atomic mass?

Do Now
1. What is the atomic number of copper (Cu)
– 29
2. What element has 80 protons
– mercury (Hg)
3. An isotope of magnesium (Mg) has a mass number of 26. How many neutrons does it have?
– 14

Do Now
1. What is the atomic number of copper (Cu)
– 29
2. What element has 80 protons
– mercury (Hg)
3. An isotope of magnesium (Mg) has a mass number of 26. How many neutrons does it have?
– 14

Do Now
1. What is the atomic number of copper (Cu)
– 29
2. What element has 80 protons
– mercury (Hg)
3. An isotope of magnesium (Mg) has a mass number of 26. How many neutrons does it have?
– 14

Do Now
1. What is the atomic number of copper (Cu)
– 29
2. What element has 80 protons
– mercury (Hg)
3. An isotope of magnesium (Mg) has a mass number of 26. How many neutrons does it have?
– 14

Do Now
4. Germanium (Ge) isotopes have the following natural abundance.
39% germanium-72
61% germanium-73
What is the atomic mass?
– 72.61

Do Now
4. Germanium (Ge) isotopes have the following natural abundance.
39% germanium-72
61% germanium-73
What is the atomic mass?
– 72.61

• Test #2 on Atomic Theory
• Wednesday, November 12, 2014
• 50 questions, open response
• Topics
1) Creation of the Atomic Theory
2) Subatomic Particles
3) Atomic Number, Mass Number, Atomic Mass
4) Atomic Notation

Last Class
SWBAT explain the meaning of atomic number, mass number, average atomic mass and atomic symbols, and determine these features using a periodic table.
Today we are going to learn a quick notation to indicate individual atoms precisely by their subatomic particles

Atomic Notation
Write this in your notes
SWBAT read and write atomic notation

Write this in your notes
Atomic Notation mass number atomic number
12
6
C atomic symbol
‹#›
Atomic notation is used to describe individual atoms or groups of atoms with a specific number of protons, neutrons and electrons
5.1 The Atom Has a Structure

Atomic Notation
‹#› mass number atomic number
12
6
C atomic symbol
• One specific atom
• How many protons?
• 6
• How many neutrons?
• 6
5.1 The Atom Has a Structure

Written and Spoken Name of Atoms
‹#› mass number atomic number
12
6
C atomic symbol
Written & spoken name
Carbon-12
Write this in your notes
(element name)-(mass number)
5.1 The Atom Has a Structure

Atomic Notation
‹#› mass number atomic number
12
6
C
+2 charge atomic symbol
Write this in your notes
If the atom has a charge, then this will be located in the upper right hand corner
If no charge, then this space is blank
5.1 The Atom Has a Structure

Atomic Notation
‹#› mass number atomic number
12
6
C
+2 charge atomic symbol
• One specific atom
• 6 protons
• 6 neutrons
• How many electrons?
• 4 (charge = N p
- N e
)
5.1 The Atom Has a Structure

Write this in your notes
Periodic Table Notation atomic number average atomic mass
6
C
12.011
Atomic Notation mass number
‹#› atomic number
12
6
C atomic symbol charge atomic symbol
5.1 The Atom Has a Structure

Write this in your notes
Periodic Table Notation atomic number average atomic mass
6
C
12.011
Atomic Notation mass number
‹#› atomic number
12
6
C
The atomic number is on top!
The atomic number is on the bottom!
5.1 The Atom Has a Structure

Periodic Table Notation atomic number average atomic mass
6
C
12.011
Average atomic mass is not the same as mass number
Atomic Notation mass number
‹#› atomic number
12
6
C
Write this in your notes
5.1 The Atom Has a Structure

Write this in your notes
Name
Mass number
# protons
# neutrons
‹#› 5.1 The Atom Has a Structure

Written and Spoken Name of Atoms
‹#› mass number atomic number
12
6
C atomic symbol
Written & spoken name
Carbon-12
(element name)-(mass number)
5.1 The Atom Has a Structure

Write this in your notes
Name
Mass number
# protons
# neutrons
‹#› 5.1 The Atom Has a Structure

Write this in your notes
Name
Carbon-12
Mass number
# protons
# neutrons
‹#› 5.1 The Atom Has a Structure

Write this in your notes
Name
Carbon-12 Carbon-13
Mass number
# protons
# neutrons
‹#› 5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
‹#› 5.1 The Atom Has a Structure

‹#› mass number atomic number
12
6
C atomic symbol
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
‹#› 5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
‹#› 5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
‹#›
13
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
‹#›
13 14
5.1 The Atom Has a Structure

‹#› p = proton N p
= number of protons e = electron N e
= number of electrons n = neutron N n
= number of neutrons atomic number = Z = N p mass number = A = N p
+ N n charge = N p
- N e
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
‹#›
13 14
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
6
‹#›
13 14
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
6
‹#›
13
6
14
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
6
‹#›
13
6
14
6
5.1 The Atom Has a Structure

‹#› p = proton N p
= number of protons e = electron N e
= number of electrons n = neutron N n
= number of neutrons atomic number = Z = N p mass number = A = N p
+ N n charge = N p
- N e
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
6
‹#›
13
6
14
6
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
6
6
‹#›
13
6
14
6
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
6
6
‹#›
13
6
7
14
6
5.1 The Atom Has a Structure

Name
Carbon-12 Carbon-13
Write this in your notes
Carbon-14
Mass number
# protons
# neutrons
12
6
6
‹#›
13
6
7
14
6
8
5.1 The Atom Has a Structure

Homework Examples
Write this in your notes
Example isotope name atomic notation atomic number mass number
# of protons
# of neutrons
# of electrons
1 calcium-
43
2 16 20 18
5.1 The Atom Has a Structure ‹#›

‹#›
Solving Problems - Example 1
For calcium-43 , write the following:
1) atomic symbol
2) atomic number
3) mass number
4) number of protons
5) number of neutrons
6) number of electrons
7) the atomic notation
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 1
Atomic symbol for calcium-43
1) Get out your periodic table
2) Find calcium
3) Look up the atomic symbol
4) Ca
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 1
Atomic number for calcium-43
1) Get out your periodic table
2) Find calcium
3) Look up the atomic number big number above symbol
1) 20
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 1
Mass number for calcium-43
1) In this notation format, the number at the end is the mass number
43
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 1
Number of protons for calcium-43
1) Get out your notes
2) Find the equations
3) atomic # = N p
4) atomic # = 20
5) N p
= 20
20
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 1
Number of neutrons for calcium-43
1) Get out your notes
2) Find the equations
3) mass # = N p
+ N n
4) mass # = 43, p = 20
23
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 1
Number of electrons for calcium-43
1) Get out your notes
2) Find the equations
3) charge = N p
- N e
4) charge = 0, N p
= 20
20
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 1
Atomic notation for calcium-43 mass #
atomic # charge
43
Ca
20
0
5.1 The Atom Has a Structure

Homework Examples
Write this in your notes
Example isotope name atomic notation atomic number mass number
# of protons
# of neutrons
# of electrons
1 calcium-
43
𝟒𝟑
𝟐𝟎
𝐂𝐚 20 43 20 23 20
2 16 20 18
5.1 The Atom Has a Structure ‹#›

‹#›
Solving Problems - Example 2
For an atom has 16 protons, 20 neutrons and 18 electrons find the following:
1) atomic number
2) atomic symbol
3) mass number
4) charge
5) the atomic notation
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 2
Atomic number
1) Get out your notes
2) Find the equations
3) atomic # = N p
4) N p
= 16
5) atomic # = 16
16
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 2
Atomic symbol
1) Get out your periodic table
2) Find atomic number 16
3) Look up the atomic symbol
4) S
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 2
Mass number
1) Get out your notes
2) Find the equations
3) mass # = N p
+ N n
4) N p
= 16, N n
= 20
36
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 2
Charge
1) Get out your notes
2) Find the equations
3) charge = N p
- N e
4) N p
= 16, N e
= 18
-2
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 2
Atomic notation mass #
atomic # charge
36
S
16
-2
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 2
Isotope Name
36
S
16
-2
= ???
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 2
Isotope Name
36
S
16
-2
= sulfur-36 ______
5.1 The Atom Has a Structure

‹#›
Solving Problems - Example 2
Isotope Name
36
S
16
-2
= sulfur-36 dianion
5.1 The Atom Has a Structure

Homework Examples
Write this in your notes
Example isotope name atomic notation atomic number mass number
# of protons
# of neutrons
# of electrons
1
2 calcium-
43
𝟒𝟑
𝟐𝟎
𝐂𝐚 20 sulfur-
36 dianion
𝟑𝟔
𝟏𝟔
𝐒
−𝟐 𝒙
16
43
36
20
16
23
20
20
18
‹#› 5.1 The Atom Has a Structure

Homework Examples
Write this in your notes
Example isotope name atomic notation atomic number mass number
# of protons
# of neutrons
# of electrons
1 calcium-
43
2 16 20 18
5.1 The Atom Has a Structure ‹#›

‹#›
• Atomic Notation Worksheet
• Use your notes and your periodic table
5.1 The Atom Has a Structure

‹#›
6
8
9
10
12
6
C
+2
6
C
12.011
7
5.1 The Atom Has a Structure