Uploaded by Mattie Underwood

Unit3 FormulasandNaming

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Science Starter:
• Using your notes from last week, describe
the difference between a covalent bond
and an ionic bond.
Today’s Agenda:
• Atomic Bonds
Virtual Lab
• Atomic Bonds
Game and Review
• Compounds
EdPuzzle
Review
• What are the outer-most
electrons of an atom called?
Review
• What are the two main types
of bonds we discussed?
Review
• What are the differences
between the two types of
bonds?
Today:
• Complete the covalent bonding virtual lab.
1. To access the lab, go to my website, go the ‘Useful Links’ tab,
click on Physical Science, and choose ‘Bonds Virtual Lab’.
2. On the left, scroll to the bottom and read the procedure.
3. Write the molecules you build on a piece of paper.
4. After you have completed the procedures and drawn your
molecules, click on the ‘Journal’. Answer the questions on
your paper.
• Play “Collisions”, an ionic bonding game.
1. To access the game, go again to the ‘Useful Links’ tab on my
website and choose ‘Collisions’.
2. Play all the way to Level 6. When you beat level six, raise your
hand so I can check your work for completion.
• Complete the Ionic Compounds EdPuzzle.
Exit Ticket:
• Grab a book and turn to page 564. Complete the Section 2
Review, questions 8-11, using your notes and the book.
Science Starter:
• Using the Bohr model, draw the following atoms bonded
together:
• H2O
• CH4
• O2 (this is a double bonded molecule!)
Today’s Agenda:
• Writing Formulas
Notes
• Writing Formula
Worksheets and
Game
Bonds Review
Writing Formulas
• Oxidation number:
positive or negative
number that indicates
how many electrons an
atom has gained, lost,
or shared to become
stable
Writing
Formulas
• For ions, charge
is oxidation
number
• Patterns seen on
the Periodic
Table
Writing
Formulas
• Binary
compound: two
ions combined
• When put
together, two
charged ions are
neutral
Writing
Formulas
• What about
elements with
unequal positive
and negative
charges?
Writing
Formulas
• Write the symbol of the
element that has the positive
oxidation number.
• Write the symbol of the
element with the negative
oxidation number.
• Find the least common
multiple of the charges. The
charge (without the sign) of
one ion becomes the
subscript of another ion.
Exit Ticket:
• Write formulas for
the following
compounds:
potassium iodide,
phosphorus
pentachloride,
dichlorine
heptoxide
Science Starter:
• Write the formulas for
the following
compounds:
• Potassium sulfide
• Lithium nitride
• Lead (IV) phosphide
Today’s Agenda:
• Naming
Compounds
Notes and
Worksheets
• Naming
Compounds
Edpuzzle
Naming Ionic
Compounds
• Write the name of the positive ion.
• Using table, check to see whether the
positive ion forms more than one oxidation
number. If so, determine the oxidation
number of the ion from the formula of the
compound. Write the charge of the positive
ion using roman numbers in parentheses
after the ions name.
• Write the root name of the anion.
• Add the ending –ide to the root.
Naming Ionic
Compounds
• CuCl
• AlCl3
• Cr2O3
Naming Compounds
• Polyatomic ion:
positively or
negatively charged
covalently bonded
group of atoms
• Made of more than
one element but act
as one ion
Polyatomic Ions
• Follow same steps,
but when more than
one polyatomic ion is
needed to balance the
charges of the ions,
write parentheses
around the polyatomic
ion before adding the
subscript.
Polyatomic Ions
• Barium chlorate
• Sodium phosphate
• Aluminum carbonate
Polyatomic Ions
• For naming polyatomic ions:
• Write name of positive ion.
• Write name of negative ion.
• Sr(OH)2
Covalent
Compounds
• Between
nonmetals
• Can combine in a
variety of ways,
so need prefixes
to indicate
number
Covalent
Compounds
• Mono- only used
for second atom
• N2O
• NO
• NO2
• N2O5
Exit Ticket:
• Write the names of the following:
• Al2O3
• Ba(ClO3)2
• SO2
• NH4Cl
• PCl3
Science Starter:
• Write the chemical names for:
• Fe2S3
• Cu(ClO3)2
• Ca3(PO4)2
• (NH4)2SO4
Science Starter:
• Write the chemical names for:
•
•
•
•
Iron (III) sulfide: Fe2S3
Copper (II) chlorate: Cu(ClO3)2
Calcium phosphate: Ca3(PO4)2
Ammonium sulfate: (NH4)2SO4
Today’s Agenda:
• Name Game!
• Complete work for the
week
• Kahoot!
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