Transcript Final Exam Review Day 1 - teacherstroh

Catalyst – Review Day 2
What is the difference between an
independent and dependent
variable?
2. What are the 2 main subgroups of
matter?
Please take out your HW!
1.
Today’s Agenda
Catalyst
 Go over Review HW Packet #1
 Review the Atom
 Individual Work Time
 Whiteboards??
 Exit Question
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Today’s Objectives
SWBAT master the ATOM!
(Unit 3)
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Bring it together…
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Yesterday we talked about matter…
If you keep breaking down matter further and
further, you will get to something called the…
ATOM!!
For more on the theories, go to the book and read….
Subatomic Particles
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What are the three subatomic particles?
 Protons,

Neutrons, and Electrons
How do you know how many there are in each
atom?
 Protons=
atomic number (ID number)
 Electrons= atomic number (if atom is neutral)
 Neutrons= mass number- atomic number
Wow… that’s pretty fantastic
I wonder if there is anything else that we can
get from the periodic table…
 TOTALLY MAN!

 Atomic
Radius! – size of the atom
 Ionization energy! – how much energy it takes to
remove one electron!
 Electronegativity! – how much an atom wants
electrons
Atomic size DECREASES as you go across the Periodic Table
Atomic size INCREAESES as you go down the
Periodic Table
Electronegativity Trends
Practiz
1. Which element has the highest 1st ionization
energy?
 Boron,
Carbon, Nitrogen, or Oxygen
2. Which element has the lowest atomic radius?
 Lithium,
Sodium, Potassium, or Rubidium
3. Which element has the highest
electronegativity?
 Oxygen,
Sulfur, Selenium, or Tellurium
Man, what a rush!
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Can we please, please, please talk about ionic
bonding?
Fiiineeeee…..
What do you have to do to get the formulas for
ionic compounds?
Kris Kross Method!
2+
3Ca As
Ca3As2
Then, what do you do?
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
Name the sucka!
Since you had to do a lot of work, all you do for
naming is…
 Change
the second element’s ending to –ide.
 For polyatomics, just use the name.

Ex:
 MgCl2 =
Magnesium Chloride
 Al(OH)3= Aluminum Hydroxide
Wow, too easy for comfort…
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What about covalent bonds?!!?!?!? I love them…
Well, no kriss krossing… you will be given the
formula.
But, naming is a tad bit trickier.
Naming Covalent Compounds
N2O
Naming Covalent Compounds
Rule 1: If the first
element has more than
one atom, give it a
prefix.
Naming Covalent Compounds
N2O
Dinitrogen
Naming Covalent Compounds
Rule 2: the second
element gets a prefix,
uses the root of the
word and ends in -ide.
Naming Covalent Compounds
N2O
Dinitrogen Monooxide
Naming Covalent Compounds
Rule 3: the “o” or “a”
at the end of the prefix
is dropped if the
element begins in a
vowel.
Naming Covalent Compounds
N2O
Dinitrogen Monooxide
Naming Covalent Compounds
N2O
Dinitrogen Monoxide
Writing Formulas from Names
Is it ionic or is it covalent?
EXAMPLES
•
Carbon
tetrachloride
•
Diarsenic trioxide
•
Magnesium
hydroxide
•
Calcium Chloride
YOUR TURN TO
“FORMULIZE”
1.
Sulfur trioxide
2.
Carbon monoxide
3.
Lithium Oxide
4.
Rubidium Phosphate
5.
Tetraphosphorus
hexasulfide
6.
Xenon difluoride
Periodic Table Whiteboards!
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Put a box around all Alkali Metals
Put a box around all Halogens
Put a box around all Transition Metals
Put a box around all Noble Gases
Circle the MOST ELECTRONEGATIVE element
Circle the LEAST ELECTRONEGATIVE element
Periodic Table Whiteboards!
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Circle the element with an ATOMIC NUMBER
of 7
Circle the element with 14 PROTONS
Circle the element with an ATOMIC MASS of
52
Circle the element with 45 ELECTRONS
Circle the element with 20 PROTONS and 20
NEUTRONS
Exit Question
1. Pick the most electronegative element of these
two: Sodium or Magnesium.
2. Pick the element with the higher 1st ionization
energy: Fluorine or Oxygen.
3. Now write the formula and name the compound
formed between lithium and oxygen.
4. Name SO2.
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Atoms (subatomic particles)
Ionic Bonding… naming
Covalent Bonding… naming
Ionization Energy
Electronegativity