Review Sheet – Chemistry, Level 3 – Ch. 7
Name: ____________________
Date:___________
Period:___
This test covers materials in the textbook in Chapters 7 (pp. 224-249). You are always responsible for the topics
on the previous tests.
. Test Expectations
The student should be able:
· Write Lewis dot structures for individual elements and provide a likely ion for the element..
· Convert formulas to names and names to formulas for ionic compounds, covalent compounds, and acids.
· Use the octet rule to describe the similarities and differences between ionic and covalent bonding.
· Describe the differences in expected properties between ionic and covalent compounds.
· Describe the property of electronegativity and its trend, and analyze bonds in terms of electronegativity
differences
1. Write the correct name of each of the following compounds.
A. ZnO
__zinc oxide___________
F. CuBr
___copper (I) bromide__________
B. K2CO3
__potassium carbonate_________
G. P2S3
___diphosphorus trisulfide_______
C. H2SO4
__sulfuric acid___________
H. N2O5
___dinitrogen pentoxide__________
D. SF6
___sulfur hexafluoride________
I. K2S
___potassium sulfide__________
J. HI
___hydroiodic acid__________
E. (NH4)3PO4 ___ammonium phosphate_______
2. Write the correct formula for each of the following compounds.
A. sodium nitrate
____NaNO3_________
B. phosphorous pentachloride
____PCl5_________
C. hydrosulfuric acid
____H2S_________
D. nitric acid
_____HNO3________
E. magnesium hydroxide
_____Mg(OH)2________
F. iron (II) hydroxide
_____Fe(OH)2________
G. oxalic acid
_____H2C2O4________
H. nitrogen trifluoride
_____NF3________
I. dihydrogen monoxide
_____H2O________
J. silver chloride
_____AgCl________
K. ammonia
_____NH3________
L. chromium (V) chloride
_____CrCl5________
3. You are provided with a number of different compounds. What properties would expect to see from the
ionic compounds? What properties might you see in the covalent compounds?
Ionic Compounds: solid, white crystalline, conducts electricity when dissolved in water, hard, brittle
Covalent Compounds: solid, liquid, or gas, tend to be soft, lower melting point, odors
4. Draw the correct Lewis structures for the following elements. What ion is each most likely to form?
Element
Lithium
Lewis Structure
1 dots
Arsenic
5 dots
Bromine
7 dots
Oxygen
8 dots
Zinc
2 dots
Gold
1 dot
Titanium
2 dots
Gallium
3 dots
Metal/Nonmetal
Likely Ion
Metal
Li+
Semi-metal
As3-
Nonmetal
Br-
Nonmetal
O2-
Metal
Zn2+
Metal
Au+
Metal
Ti2+
Metal
Ga3+
5. Define each of the following terms clearly and completely.
(a) octet rule --
(h) electronegativity difference –
(b) molecule –
(i) monatomic ion –
(c) electronegativity –
(j) polyatomic ion –
(d) acid –
(k) anion –
(e) ionic bond –
(l) cation –
(f) covalent bond –
(m) multivalent ion –
(g) polar bond –
(n) charge neutrality –