Unit 4 Vocabulary- Bonding
You must complete the following chart for ALL terms in order to get credit!
TERM:
DEFINITION:
EXAMPLE or DRAW A PICTURE or USE IN A SENTENCE:
1.
2.
3.
4.
5.
Chemical Bond
Ionic Bond
Metallic Bond
Covalent Bond
Single Covalent Bond
6.
7.
8.
9.
Double Covalent Bond
Triple Covalent Bond
Chemical Formula
Polyatomic Ion
Write the Formula for the following Polyatomic Ions
a.
b.
c.
d.
Ammonium
Acetate
Carbonate
Chlorate
e.
f.
g.
h.
Hydroxide
Nitrate
Phosphate
Sulfate
4.1 Bonding
Use your NOTES to help you answer questions!
1. Why do elements bond?
2. Bonding that involves the sharing of electrons is known as
bonding.
3. Bonding that involves the exchange or gain and loss of electrons is known as
bonding.
4. What is the octet rule?
5. How many valence electrons do most elements need to become stable?
6. Which group on the periodic table does not form compounds? Why?
7. In each of the following formulas, identify which elements are present and how many of each is present.
a. H2O2
b. C6H12O6
c. CH3COOH
Matching
8. Covalent Bond
9. Ionic Bond
10. Metallic Bond
a. between two metals
b. between two nonmetals
c. between a metal and a nonmetal
Covalent Bonding
For each of the following compounds, draw the Lewis dot structure (hint: look at the group it’s in) for each
element and show the electrons they share using chemical bonds.
Lewis Dot Structures
1. CH4
2. NH3
3. CF4
4. CO2
5. O2
6. H2O
7. H2
8.
HCl
Compound with Bonds
9.
N2
10.
C2H6 (hint: connect the carbons to each other and the hydrogens to the carbon)
Naming and Writing Formulas for Covalent Compounds
Write the names for the following covalent compounds:
1.)
P4S5 __________________________________
6)
B2Si __________________________________
2)
O2 __________________________________
7)
NF3 __________________________________
3)
SeF6 __________________________________
8)
CO
4)
Si2Br6 __________________________________
9)
CO2
10)
H2O
(use formal name, not water)
5)
SCl4 __________________________________
Write the formulas for the following covalent compounds. Numbers must be written as SUBSCRIPTS. Element symbols
must be written correctly:
11)
antimony tribromide
__________________________________
14)
carbon monoxide
__________________________________
12)
hexaboron monosilicide
__________________________________
15)
iodine pentafluoride
__________________________________
13)
chlorine dioxide
__________________________________
16)
dinitrogen trioxide
__________________________________
17)
nitrogen trihydride (also known as ammonia)
__________________________________
19)
carbon tetrachloride
_
18)
____
phosphorus triiodide
.
20)
sulfur hexafluoride
___________
Worksheet 4: Unit 4- Ionic Compounds/ Writing formulas
Fill in the following information. Use your periodic table for help.
This section includes elements from all parts of the periodic table. Some include polyatomic ions, if there is more than
one polyatomic ion needed in the formula, put parentheses around it before adding in the subscript. Hint: if it ends in –
ate then it is a polyatomic ion!!!
Number
Name
1
Potassium iodide
2
Calcium fluoride
3
Lithium iodide
4
Barium oxide
5
Calcium sulfide
6
Cesium oxide
7
Calcium nitrate
8
Sodium sulfate
9
Sodium phosphide
Cation (include
symbol and charge)
K
+
Anion (include
symbol and charge)
I-
Formula
KI
10
Ammonium nitrate
Worksheet 5: Unit 4- Writing formulas and names from ions
In the following table, use the ions to determine the formula of the ionic compound and then its name. Remember, the
compound needs to be neutral!
Number
Cation
Anion
Formula
Name
1
Ca2+
S2-
CaS
Calcium Sulfide
2
Mg2+
PO43-
3
NH4+
O2-
4
Na+
S2-
5
Li+
Cl-
6
Sr2+
O2-
7
K+
I-
8
Li+
N3-
9
Na+
O2-
10
Ra2+
NO3-
Review: Unit 4 Combination of covalent and ionic compound naming.
First identify whether the bond is covalent or ionic. Remember that covalent requires 2 nonmetals and ionic requires a
metal and a nonmetal or polyatomic ions.
Number
Formula
1
NaBr
2
Ca(C2H3O2)2
3
P2O5
4
Ca(NO3)2
5
Na3PO4
6
K3N
7
SO2
8
Mg(OH) 2
9
FrNO3
10
Ba3P2
Ionic or Covalent
Name
Review: Unit 4 Combination of covalent and ionic compound formulas
First determine whether each is ionic or covalent, then write the formula for each name.
Number
Name
1
silicon dioxide
2
Carbon tetrahydride
Ionic or Covalent
Formula
3
magnesium phosphate
4
sodium acetate
5
diboron tetrabromide
6
magnesium sulfate
7
potassium carbonate
8
ammonium oxide
9
Selenium difluoride
10
Nitrogen tribromide