Transcript Ionic Bonding

Ionic Bonding
11/17/13
11/18/13
Objective
SWBAT
define ionic
bond and
describe the
formation of
ionic bonds.
5 minutes
Bell Ringer
11/18/13
Objective
SWBAT
define ionic
bond and
describe the
formation of
ionic bonds.
4 minutes
Bell Ringer
3 MINUTES LEFT!
10/11/2012
11/18/13
Objective
SWBAT
define ionic
bond and
describe the
formation of
ionic bonds.
3 minutes
Bell Ringer
11/18/13
Objective
SWBAT
define ionic
bond and
describe the
formation of
ionic bonds.
2 minutes
Bell Ringer
1
MINUTE
LEFT!!!
10/11/2012
11/18/13
Objective
SWBAT
define ionic
bond and
describe the
formation of
ionic bonds.
1 minutes
Bell Ringer
30 SECONDS LEFT!
10/11/2012
11/18/13
Objective
SWBAT
define ionic
bond and
describe the
formation of
ionic bonds.
30 seconds
Bell Ringer
Monday Jan. 1, 2013
Objective
SWBAT define ionic bond and
describe the formation of ionic
bonds.
Homework
1. Match.com Ionic Bonding
Set up your Cornell Notes
Date 11/17/13
Topic: Ionic Bonding
Essential Questions:
1. How can valence electrons be used to predict
chemical formulas?
Topic: Ionic Bonding
What is an ionic An ionic bond is a bond between a positive
cation (metal) and a negative anion (nonbond? How
metal).
does it form?
An ionic bond forms when the metal
exchanges (transfers) its electrons with
the non-metal to have a full outer electron
shell
Ionic Bonds form from IONS!!
The rule of Zero Charge
Rule of Zero Charge
 Every time a metal atom and a nonmetal
atom bond, they form a compound with an
over all zero charge
Simple Ionic
Compounds
Compound
Metal
Cation
Valence
Electrons
Nonmetal
Anion
Valence
Electrons
NaCl
Na
Na+
1
Cl
Cl-
7
CaO
Ca
Ca2+
2
O
O2**Notice that the charges equal zero and the # of valence
electrons adds up to 8
Complex Ionic
Compounds
6
Compound
Metal
Cations
Nonmetal
Anions
MgCl2
Mg
Mg2+
Cl
Cl- Cl-
Na2O
Na
Na+ Na+
O
O2-
**Notice that the charges equal zero: +2-1-1=0
What does it look like?
Na+
Cl-


Na loses 1e- and Cl gains 1e- to
have 8 valence electrons each!
What does it look like?


NaCl
Opposites Attract!
More than one element can bond!
F-1
F-1
Mg+2



More than one ions can bond!



MgF2
Check For Understanding
Lithium nitride has the formula Li3N
a. What is the charge on the lithium ion? Li+1
b. What is the charge on the nitrogen ion? N-3
c. Show that the charges on the ions add up to zero.
1+1+1-3= 0
d. What is the total number of valence electrons in all
atoms of Li3N?
Li: 1 N: 5
Li: 1*3=3
N:5
3+5=8
Topic: Ionic Bonding
1.
How do we write
formulas for ionic
compounds?
2.
3.
4.
5.
Write the symbol for each element
Write the charge for each element
Cross and Drop: Bring each charge down
diagonally
Polyatomics act like one element
SIMPLIFY subscripts when done
Example
Magnesium Chloride
1. Write each element separately
Mg
2. Write charge for each element
Mg+2
3. Cross and Drop
Mg+2
Mg1
Cl
Cl-1
Cl-1
Cl2
MgCl2
Example with Polyatomic Ions
Aluminum Phosphate
1. Write each element:
2. Write charge of each element:
3. Cross and Drop
AlPO4
Al
Al +3
Al+3
PO4
PO4-3
PO4-3
Al3
(PO4)3
Your Turn: Write the formula for the
following ionic compounds
1. Sodium Chloride
2. Magnesium Oxide
3. Lithium Fluoride
4. Aluminum Nitrate
5. Magnesium Fluoride
Reflection (5 min)
In the Summary section of your Cornell
Notes, answer the following questions
How can valence electrons be used to predict chemical
formulas?
2. Write the formula for Magnesium Sulfate
1.
Notebook Check!!
 Make sure to put your notebook in the turn in box for
Ms. Durrette to check.
 If you still haven’t gotten your notebook… get your life
together
Monday Nov. 25, 2013
Objective
SWBAT write the formula and
name for ionic compounds
Homework
1. Ionic Bonding Chart
11/25/13
Objective
SWBAT write
the formula
and name for
ionic
compounds
5 minutes
Bell Ringer
Only certain combinations of
elements result in the formation of
compounds. Li, lithium, will react
with F, fluorine, to form LiF, but it
won’t form LiF2 or LiF3. Mg,
magnesium will react with F to
form MgF2, but it won’t form MgF
or MgF3. Explain what you think is
going on.
11/25/13
Objective
SWBAT write
the formula
and name for
ionic
compounds
4 minutes
Bell Ringer
Only certain combinations of
elements result in the formation of
compounds. Li, lithium, will react
with F, fluorine, to form LiF, but it
won’t form LiF2 or LiF3. Mg,
magnesium will react with F to
form MgF2, but it won’t form
MgF or MgF3. Explain what you
think is going on.
3 MINUTES LEFT!
10/11/2012
11/25/13
Objective
SWBAT write
the formula
and name for
ionic
compounds
3 minutes
Bell Ringer
Only certain combinations of
elements result in the formation of
compounds. Li, lithium, will react
with F, fluorine, to form LiF, but it
won’t form LiF2 or LiF3. Mg,
magnesium will react with F to
form MgF2, but it won’t form MgF
or MgF3. Explain what you think is
going on.
11/25/13
Objective
SWBAT write
the formula
and name for
ionic
compounds
2 minutes
Bell Ringer
Only certain combinations of
elements result in the formation of
compounds. Li, lithium, will react
with F, fluorine, to form LiF, but it
won’t form LiF2 or LiF3. Mg,
magnesium will react with F to
form MgF2, but it won’t form MgF
or MgF3. Explain what you think is
going on.
1
MINUTE
LEFT!!!
10/11/2012
11/25/13
Objective
SWBAT write
the formula
and name for
ionic
compounds
1 minutes
Bell Ringer
Only certain combinations of
elements result in the formation of
compounds. Li, lithium, will react
with F, fluorine, to form LiF, but it
won’t form LiF2 or LiF3. Mg,
magnesium will react with F to
form MgF2, but it won’t form MgF
or MgF3. Explain what you think is
going on.
30 SECONDS LEFT!
10/11/2012
11/25/13
Objective
SWBAT write
the formula
and name for
ionic
compounds
30 seconds
Bell Ringer
Only certain combinations of
elements result in the formation of
compounds. Li, lithium, will react
with F, fluorine, to form LiF, but it
won’t form LiF2 or LiF3. Mg,
magnesium will react with F to
form MgF2, but it won’t form MgF
or MgF3. Explain what you think is
going on.
Monday 11/25/13
Objective
SWBAT write the formula and
name for ionic compounds.
Homework
1. Ionic Bonding Chart
Set up your Cornell Notes
Date 11/25/13
Topic: Ionic Bond Formulas
Essential Questions:
1. How do you write formulas and names for
ionic compounds?
Topic: Ionic Bonding
1.
How do we write
formulas for ionic
compounds?
2.
3.
4.
5.
Write the symbol for each element
Write the charge for each element
Cross and Drop: Bring each charge down
diagonally
Polyatomics act like one element
SIMPLIFY subscripts when done
Example
Magnesium Chloride
1. Write each element separately
Mg
2. Write charge for each element
Mg+2
3. Cross and Drop
Mg+2
Mg1
Cl
Cl-1
Cl-1
Cl2
MgCl2
Example with Polyatomic Ions
Aluminum Phosphate
1. Write each element:
2. Write charge of each element:
3. Cross and Drop
AlPO4
Al
Al +3
Al+3
PO4
PO4-3
PO4-3
Al3
(PO4)3
Your Turn: Write the formula for the
following ionic compounds
1. Sodium Chloride
2. Magnesium Oxide
3. Lithium Fluoride
4. Aluminum Nitrate
5. Magnesium Fluoride
Reflection (5 min)
In the Summary section of your Cornell
Notes, answer the following questions
How can valence electrons be used to predict chemical
formulas?
2. Write the formula for Magnesium Sulfate
1.
Topic: Ionic Bonding
The name of the metal stays the same
2. The non-metal loses the ending and adds
-ide
How do we name
ionic compounds? 3. Transition metals are labeled with roman
numerals for their charges
4. Polyatomics act like cations and never
change their name
1.
Ions composed of 2 or more atoms
What are
polyatomics?
1.
2.
3.
4.
5.
6.
OH-1
NO3-1
CO3-2
SO4-2
PO4-3
NH4+1
hydroxide
nitrate
carbonate
sulfate
phosphate
ammonium
Let’s look at the example from yesterday


NaCl
Opposites Attract!
Name it
1.
The name of the metal stays the same
Na (sodium) is a cation and is on the left side of the PT, it must be the metal.
Sodium
2.
The non-metal loses the ending and adds –ide
Cl (chlorine) is an anion and is on the right side of the PT, it must be the nonmetal
Chlorine the part in red is the suffix (ending). Replace this with –ide
Chloride
We don’t have any Transition metals or Polyatomic ions, so we just put what we have
together
Sodium Chloride
We Do…
 MgF2
 What is the metal? Magnesium
 What is the non-metal? Fluorine
 Flourine  Flouride
 Do we have any transition metals? No
 Do we have any polyatomic ions? No
Magnesium Fluoride
 LiNO3




What is the metal? Lithium
What is the non-metal? Nitrogen, Oxygen
Do we have any transition metals? No
Do we have any polyatomic ions? Yes
 NO3  Nitrate
Lithium Nitrate
 CuCl2
 What is the metal? Copper
 What is the non-metal? Chlorine
 Chlorine  Chloride
 Do we have any transition metals? Yes
 Copper (uncross subscripts)  2 (roman numeral II)
 Do we have any polyatomic ions? No
Copper (II) Chloride
You Do… Write in your notes
 AlBr3
 Aluminum Bromide
 CuCl3
 Copper (III) Chloride
 K2SO4
 Potassium Sulfate
Reflection: Answer your essential
question
 How do you write names for ionic bonds?