Physical Science Date :2/16/11
Instructional Objective:
1.identify the difference between ionic and covalent compounds
2.Learn about the bonds
Review Questions:
Name the following
Np______
Er_______
Other instructions:
Lab .Rolling for a compound.
Homework:
Do Work sheet for naming compound

Physical Science 09/29/10
Instructional Objective:
1.Reteach the element’s place in the periodic chart
2.Reteach naming and writing the formula for compounds
Review Questions:
1. Explain a cation
Other instructions:
Lab.Submit the work sheet before you leave
Homework:
Do the work sheet

• An atom with a charge.
• It can be positive or negative in charge.
• It can be obtain by loosing or gaining electrons. (Protons never change)

• Are always positive in charge.
• Obtain by loosing electrons.
• Always going to be a metal
• Written using the symbol with a + sign
• Ex. Na + Proton – 11, electron -10
• Roman numerals are used to show the charge of certain metals.
• Ex: Fe 3+ is named as Iron III

• Are always negative in charge.
• Obtain by gaining electrons
• Always going to be a nonmetal
• Written using a symbol with a negative sign.
• Ex: Cl – (Proton -17 ,electron -18)

What is an oxidation number?
• valence electron: electron in the outermost energy level of an atom
• oxidation number: number of electrons an atom gains, loses, or shares when it forms a chemical bond

chemical equation:
*chemical formula that describe a chemical reaction coefficient:
• number that shows how many molecules of a substance are in a chemical reaction
• Used to balance an equation

• Metal and a nonmetal combined.
• Always a cation and anion
• Net charge will be zero.
• Named as metal first ,then the nonmetal that ends with ide,ite,ate.
• Ex. Sodium Chloride (Name)
NaCl (Symbol)
• To write the symbol use the crisscross method to cancel the charges.
• Ex:

Physical Science Date :2/17/11
Instructional Objective:
1.understsnd to name compounds that contain polyatomic ions
2.Learn to write the formula for a chemical compounds
Review Questions:
1.Three exceptions of polyatomic ions.
______________________________________
_
Other instructions:
Finish the Open book pre test
Homework:
Do Work sheet for polyatomic ions

Physical Science Date :2/17/11
Instructional Objective:
1.understsnd to name compounds that contain polyatomic ions
2.Learn to write the formula for a chemical compounds
Review Questions:
1.Explain cations.
______________________________________
_
Other instructions:
Finish the work sheet with the teacher
Homework:
Do Work sheet for polyatomic ions

Physical Science Date 02/21/11
Instructional Objective:
1.Learn about the covalent compounds
2.Identify the ionic and covalent bonds
Review Questions:
1.Write the formula for sodium phosphide?
_______________________________________
Other instructions:
1.Finish the “October Sky” and submit the work sheet
2.Do Work sheet with the teacher
Homework:
Do the work sheet for the compounds.

• Many transition metals have more than one oxidation number.
• It is always indicated with roman
Numeral number.
• Ex: Copper II
Copper I
Chromium II
Chromium III

• Binary ionic compound
• *Contain two elements
• *Contain a metal and a nonmetal
• Ex: NaCl

• is a group of atoms that acts as a single atom.
• have an overall electrical charge.
• atoms are held together by covalent bonds.
• If there is more than one polyatomic ion in a molecule, the polyatomic ion is written in parentheses.
. End with ite or ate
EX: SO
3
2 - Sulfite (one less Oxygen than the ate) (Charge will be same)
SO
4
2Sulfate (Charge will be same)

• Ammonium polyatomic cation that not ending with “ite” or “ate” ending
NH +
4
NH +
3
- Ammonium
-Ammonia
• Cyanide CN -
• Hydroxide OH -

• Contain a metal and a polyatomic ion
• Contain three or more elements
• Or contain a poly atomic cation and a nonmetal
• Or contain two polyatomic ions.
• Ex: Na
2
SO
4
( 3 elements)
• Ex: Ca(SO
4
)
2
(more than one polyatomic ions, you must use a parenthesis around it)

• Always going to be nonmetals combined
• Identify or name using prefix for the number of atoms.
• Ex:

• Mono -1
• Di-2
• Tri-3
• Tetra-4
• Penta-5
• Hexta-6
• Septa-7
• Octa-8
• Nano-9
• Deca-10

Physical Science Date :2/16/09
Instructional Objective:
1.Learn about the Chemical bond
2.Identify the ionic and covalent bonds
Review Questions:
1.An atom’s mass number equals the number of ________________________
Other instructions:
Lab. Chemical bonding
Homework:
Do the work sheet

• are the force that join two or more atoms.
• A stable compound occurs.
• a net (total) attractive force between the atoms .

• Covalent bond : one or more pairs of electrons are shared by two atoms.
• Ionic bond : one or more electrons from one atom are removed and attached to another atom.
• resulting in positive and negative ions which attract each other.

• involve the sharing of a pair of valence electrons by two atoms

• one or more atoms lose electrons and other atoms gain

• The amount of energy used to remove an electron is known as the ionization energy
• Varies from element to elements
• Energy increases from left to right(less reactive)
• Energy decreases from top to bottom(easy to remove the electron, so it will be more reactive)
• Ex: K is more reactive than Na

• an ionic compound particles are arranged in a repeating pattern
• The attractions keeps the ions in a fixed position in a frame work (lattice)
• Ex:LiCl

(metal)
CHARGE OF ATOM neutr al
(nonmetal)
CHARGE OF ATOM neutr al
Na
11
Cl
17

(metal)
CHARGE OF ATOM neutr al
(nonmetal)
CHARGE OF ATOM neutr al
Na
11
Cl
17

(metal)
CHARGE OF ATOM neutr al
(nonmetal)
CHARGE OF ATOM neutr al
Na
11
Cl
17

(metal)
CHARGE OF ATOM neutr al
(nonmetal)
CHARGE OF ATOM neutr al
Na
11
Cl
17

(metal)
CHARGE OF ATOM neutr al
(nonmetal)
CHARGE OF ATOM neutr al
Na
11
Cl
17

(metal)
CHARGE OF ion positi ve
(nonmetal)
CHARGE OF ion negati
Ionic Bond
(anion)
[
Na]
1+
11
[
1-
Cl]
17

(metal)
CHARGE OF ion positi ve
(nonmetal)
CHARGE OF ion negati
Ionic Bond
(anion)
[
Na]
1+
11
[
1-
Cl]
17

(metal)
CHARGE OF ion positi ve
(nonmetal)
CHARGE OF ion negati
Ionic Bond
(anion)
[
Na]
1+
11
[
1-
Cl]
17

(metal)
CHARGE OF ion positi ve
(nonmetal)
CHARGE OF ion negati
Ionic Bond
(anion)
[
Na]
1+
11
[
1-
Cl]
17

(metal)
CHARGE OF ion positi ve
(nonmetal)
CHARGE OF ion negati
Ionic Bond
(anion)
[
Na]
1+
11
[
1-
Cl]
17

(metal)
CHARGE OF ion positi ve
(nonmetal)
CHARGE OF ion negati
Ionic Bond
(anion)
[
Na]
1+
11
[
1-
Cl]
17

(metal)
CHARGE OF ion positi ve
(nonmetal)
CHARGE OF ion negati
Ionic Bond
(anion)
[
Na]
1+
11
[
1-
Cl]
17

• is made up of two atoms of the same element
• is usually held together by a covalent bond.
• Most gaseous elements form diatomic molecules.

• Hydrogen( H
2
),
• Oxygen ( O
2
),
• Nitrogen (N
2
),
• Fluorine (F
2
),
• Chlorine(Cl
2
),
• Bromine (Br
2
)
• Iodine(I
2
)

• Is the attraction between a metal cation and the shared electrons that surround it
• More valance electrons in a metal-stronger the metallic bond

Physical Science Date :2/25/2010
Instructional Objective:
1.Name the ionic and covalent compounds
2. Formula for ionic and covalent compounds
Review Questions: write the formula for the following
1.Sodiumphosphate
_________________________________
Other instructions:
Finish the work sheet (Use the rollercoaster book from under your desk).
Homework:
Study for the unit test